Home / 15,531.54-21,434.51-8,814.62

Finding the Fourth Proportional to 15,531.54, 21,434.51 and 8,814.62

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Solution

The fourth proportional to 15,531.54, 21,434.51 and 8,814.62 is: 12,164.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,531.54 : 21,434.51 = 8,814.62 : x
  2. Step 2: Convert to fraction form
    15,531.54/21,434.51 = 8,814.62/x
  3. Step 3: Cross multiply
    15,531.54x = 21,434.51 × 8,814.62
  4. Step 4: Simplify right side
    15,531.54x = 188,937,060.54
  5. Step 5: Solve for x
    x = 188,937,060.54/15,531.54
  6. Step 6: Final answer
    x = 12,164.73

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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.