Home / 42,018.35-63,025.29-15,720.89

Finding the Fourth Proportional to 42,018.35, 63,025.29 and 15,720.89

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Solution

The fourth proportional to 42,018.35, 63,025.29 and 15,720.89 is: 23,580.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,018.35 : 63,025.29 = 15,720.89 : x
  2. Step 2: Convert to fraction form
    42,018.35/63,025.29 = 15,720.89/x
  3. Step 3: Cross multiply
    42,018.35x = 63,025.29 × 15,720.89
  4. Step 4: Simplify right side
    42,018.35x = 990,813,336.18
  5. Step 5: Solve for x
    x = 990,813,336.18/42,018.35
  6. Step 6: Final answer
    x = 23,580.49

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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.