Home / 12,929.60-17,803.36-9,747.52

Finding the Fourth Proportional to 12,929.60, 17,803.36 and 9,747.52

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Solution

The fourth proportional to 12,929.60, 17,803.36 and 9,747.52 is: 13,421.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,929.60 : 17,803.36 = 9,747.52 : x
  2. Step 2: Convert to fraction form
    12,929.60/17,803.36 = 9,747.52/x
  3. Step 3: Cross multiply
    12,929.60x = 17,803.36 × 9,747.52
  4. Step 4: Simplify right side
    12,929.60x = 173,538,607.67
  5. Step 5: Solve for x
    x = 173,538,607.67/12,929.60
  6. Step 6: Final answer
    x = 13,421.81

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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.