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Finding the Fourth Proportional to 42,602.93, 63,902.06 and 13,020.75

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Solution

The fourth proportional to 42,602.93, 63,902.06 and 13,020.75 is: 19,530.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,602.93 : 63,902.06 = 13,020.75 : x
  2. Step 2: Convert to fraction form
    42,602.93/63,902.06 = 13,020.75/x
  3. Step 3: Cross multiply
    42,602.93x = 63,902.06 × 13,020.75
  4. Step 4: Simplify right side
    42,602.93x = 832,052,363.13
  5. Step 5: Solve for x
    x = 832,052,363.13/42,602.93
  6. Step 6: Final answer
    x = 19,530.40

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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.