Home / 21,428,555.32-29,571,795.96-12,138,054.40

Finding the Fourth Proportional to 21,428,555.32, 29,571,795.96 and 12,138,054.40

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Solution

The fourth proportional to 21,428,555.32, 29,571,795.96 and 12,138,054.40 is: 16,750,735.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,428,555.32 : 29,571,795.96 = 12,138,054.40 : x
  2. Step 2: Convert to fraction form
    21,428,555.32/29,571,795.96 = 12,138,054.40/x
  3. Step 3: Cross multiply
    21,428,555.32x = 29,571,795.96 × 12,138,054.40
  4. Step 4: Simplify right side
    21,428,555.32x = 358,944,068,068,180.25
  5. Step 5: Solve for x
    x = 358,944,068,068,180.25/21,428,555.32
  6. Step 6: Final answer
    x = 16,750,735.77

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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.