Home / 42,386.06-63,585.78-12,800.20

Finding the Fourth Proportional to 42,386.06, 63,585.78 and 12,800.20

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Solution

The fourth proportional to 42,386.06, 63,585.78 and 12,800.20 is: 19,202.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,386.06 : 63,585.78 = 12,800.20 : x
  2. Step 2: Convert to fraction form
    42,386.06/63,585.78 = 12,800.20/x
  3. Step 3: Cross multiply
    42,386.06x = 63,585.78 × 12,800.20
  4. Step 4: Simplify right side
    42,386.06x = 813,910,701.16
  5. Step 5: Solve for x
    x = 813,910,701.16/42,386.06
  6. Step 6: Final answer
    x = 19,202.32

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1.5x scale

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.