Home / 15,337.60-21,165.60-9,671.20

Finding the Fourth Proportional to 15,337.60, 21,165.60 and 9,671.20

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Solution

The fourth proportional to 15,337.60, 21,165.60 and 9,671.20 is: 13,346.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,337.60 : 21,165.60 = 9,671.20 : x
  2. Step 2: Convert to fraction form
    15,337.60/21,165.60 = 9,671.20/x
  3. Step 3: Cross multiply
    15,337.60x = 21,165.60 × 9,671.20
  4. Step 4: Simplify right side
    15,337.60x = 204,696,750.72
  5. Step 5: Solve for x
    x = 204,696,750.72/15,337.60
  6. Step 6: Final answer
    x = 13,346.07

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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.