Home / 42,501.60-63,755.10-12,939.75

Finding the Fourth Proportional to 42,501.60, 63,755.10 and 12,939.75

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Solution

The fourth proportional to 42,501.60, 63,755.10 and 12,939.75 is: 19,410.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,501.60 : 63,755.10 = 12,939.75 : x
  2. Step 2: Convert to fraction form
    42,501.60/63,755.10 = 12,939.75/x
  3. Step 3: Cross multiply
    42,501.60x = 63,755.10 × 12,939.75
  4. Step 4: Simplify right side
    42,501.60x = 824,975,055.23
  5. Step 5: Solve for x
    x = 824,975,055.23/42,501.60
  6. Step 6: Final answer
    x = 19,410.45

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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.