Home / 42,805.14-64,207.53-11,640.30

Finding the Fourth Proportional to 42,805.14, 64,207.53 and 11,640.30

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Solution

The fourth proportional to 42,805.14, 64,207.53 and 11,640.30 is: 17,460.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,805.14 : 64,207.53 = 11,640.30 : x
  2. Step 2: Convert to fraction form
    42,805.14/64,207.53 = 11,640.30/x
  3. Step 3: Cross multiply
    42,805.14x = 64,207.53 × 11,640.30
  4. Step 4: Simplify right side
    42,805.14x = 747,394,911.46
  5. Step 5: Solve for x
    x = 747,394,911.46/42,805.14
  6. Step 6: Final answer
    x = 17,460.40

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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.