Home / 15,331.60-21,152.10-11,359.36

Finding the Fourth Proportional to 15,331.60, 21,152.10 and 11,359.36

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Solution

The fourth proportional to 15,331.60, 21,152.10 and 11,359.36 is: 15,671.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,331.60 : 21,152.10 = 11,359.36 : x
  2. Step 2: Convert to fraction form
    15,331.60/21,152.10 = 11,359.36/x
  3. Step 3: Cross multiply
    15,331.60x = 21,152.10 × 11,359.36
  4. Step 4: Simplify right side
    15,331.60x = 240,274,318.66
  5. Step 5: Solve for x
    x = 240,274,318.66/15,331.60
  6. Step 6: Final answer
    x = 15,671.84

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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.