Home / 12,538.79-17,307.23-7,237.14

Finding the Fourth Proportional to 12,538.79, 17,307.23 and 7,237.14

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Solution

The fourth proportional to 12,538.79, 17,307.23 and 7,237.14 is: 9,989.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,538.79 : 17,307.23 = 7,237.14 : x
  2. Step 2: Convert to fraction form
    12,538.79/17,307.23 = 7,237.14/x
  3. Step 3: Cross multiply
    12,538.79x = 17,307.23 × 7,237.14
  4. Step 4: Simplify right side
    12,538.79x = 125,254,846.52
  5. Step 5: Solve for x
    x = 125,254,846.52/12,538.79
  6. Step 6: Final answer
    x = 9,989.39

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Half scale
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Double scale
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Similar ratio
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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.