Home / 20,787,856.80-31,146,355.80-17,740,928.40

Finding the Fourth Proportional to 20,787,856.80, 31,146,355.80 and 17,740,928.40

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Solution

The fourth proportional to 20,787,856.80, 31,146,355.80 and 17,740,928.40 is: 26,581,156.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,787,856.80 : 31,146,355.80 = 17,740,928.40 : x
  2. Step 2: Convert to fraction form
    20,787,856.80/31,146,355.80 = 17,740,928.40/x
  3. Step 3: Cross multiply
    20,787,856.80x = 31,146,355.80 × 17,740,928.40
  4. Step 4: Simplify right side
    20,787,856.80x = 552,565,268,168,724.69
  5. Step 5: Solve for x
    x = 552,565,268,168,724.69/20,787,856.80
  6. Step 6: Final answer
    x = 26,581,156.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.