Home / 15,294.38-21,106.39-8,580.15

Finding the Fourth Proportional to 15,294.38, 21,106.39 and 8,580.15

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Solution

The fourth proportional to 15,294.38, 21,106.39 and 8,580.15 is: 11,840.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,294.38 : 21,106.39 = 8,580.15 : x
  2. Step 2: Convert to fraction form
    15,294.38/21,106.39 = 8,580.15/x
  3. Step 3: Cross multiply
    15,294.38x = 21,106.39 × 8,580.15
  4. Step 4: Simplify right side
    15,294.38x = 181,095,957.27
  5. Step 5: Solve for x
    x = 181,095,957.27/15,294.38
  6. Step 6: Final answer
    x = 11,840.69

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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.