Home / 21,388,043,803.51-29,518,569,785.10-12,814,809,014.71

Finding the Fourth Proportional to 21,388,043,803.51, 29,518,569,785.10 and 12,814,809,014.71

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Solution

The fourth proportional to 21,388,043,803.51, 29,518,569,785.10 and 12,814,809,014.71 is: 17,686,275,456.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,388,043,803.51 : 29,518,569,785.10 = 12,814,809,014.71 : x
  2. Step 2: Convert to fraction form
    21,388,043,803.51/29,518,569,785.10 = 12,814,809,014.71/x
  3. Step 3: Cross multiply
    21,388,043,803.51x = 29,518,569,785.10 × 12,814,809,014.71
  4. Step 4: Simplify right side
    21,388,043,803.51x = 378,274,834,183,445,676,032
  5. Step 5: Solve for x
    x = 378,274,834,183,445,676,032/21,388,043,803.51
  6. Step 6: Final answer
    x = 17,686,275,456.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.