Home / 20,776,291.02-28,689,665.76-12,949,161.66

Finding the Fourth Proportional to 20,776,291.02, 28,689,665.76 and 12,949,161.66

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Solution

The fourth proportional to 20,776,291.02, 28,689,665.76 and 12,949,161.66 is: 17,881,301.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776,291.02 : 28,689,665.76 = 12,949,161.66 : x
  2. Step 2: Convert to fraction form
    20,776,291.02/28,689,665.76 = 12,949,161.66/x
  3. Step 3: Cross multiply
    20,776,291.02x = 28,689,665.76 × 12,949,161.66
  4. Step 4: Simplify right side
    20,776,291.02x = 371,507,119,897,606.81
  5. Step 5: Solve for x
    x = 371,507,119,897,606.81/20,776,291.02
  6. Step 6: Final answer
    x = 17,881,301.31

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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.