Home / 20,955,154.30-28,901,705.29-13,615,371.80

Finding the Fourth Proportional to 20,955,154.30, 28,901,705.29 and 13,615,371.80

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Solution

The fourth proportional to 20,955,154.30, 28,901,705.29 and 13,615,371.80 is: 18,778,552.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955,154.30 : 28,901,705.29 = 13,615,371.80 : x
  2. Step 2: Convert to fraction form
    20,955,154.30/28,901,705.29 = 13,615,371.80/x
  3. Step 3: Cross multiply
    20,955,154.30x = 28,901,705.29 × 13,615,371.80
  4. Step 4: Simplify right side
    20,955,154.30x = 393,507,463,177,376.81
  5. Step 5: Solve for x
    x = 393,507,463,177,376.81/20,955,154.30
  6. Step 6: Final answer
    x = 18,778,552.40

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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.