Home / 15,237.12-21,022.56-9,930

Finding the Fourth Proportional to 15,237.12, 21,022.56 and 9,930

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Solution

The fourth proportional to 15,237.12, 21,022.56 and 9,930 is: 13,700.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,237.12 : 21,022.56 = 9,930 : x
  2. Step 2: Convert to fraction form
    15,237.12/21,022.56 = 9,930/x
  3. Step 3: Cross multiply
    15,237.12x = 21,022.56 × 9,930
  4. Step 4: Simplify right side
    15,237.12x = 208,754,020.80
  5. Step 5: Solve for x
    x = 208,754,020.80/15,237.12
  6. Step 6: Final answer
    x = 13,700.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.