Home / 42,020.16-63,010.80-15,724.32

Finding the Fourth Proportional to 42,020.16, 63,010.80 and 15,724.32

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Solution

The fourth proportional to 42,020.16, 63,010.80 and 15,724.32 is: 23,579.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,020.16 : 63,010.80 = 15,724.32 : x
  2. Step 2: Convert to fraction form
    42,020.16/63,010.80 = 15,724.32/x
  3. Step 3: Cross multiply
    42,020.16x = 63,010.80 × 15,724.32
  4. Step 4: Simplify right side
    42,020.16x = 990,801,982.66
  5. Step 5: Solve for x
    x = 990,801,982.66/42,020.16
  6. Step 6: Final answer
    x = 23,579.21

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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.