Home / 15,005.34-20,707.29-8,291.43

Finding the Fourth Proportional to 15,005.34, 20,707.29 and 8,291.43

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Solution

The fourth proportional to 15,005.34, 20,707.29 and 8,291.43 is: 11,442.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,005.34 : 20,707.29 = 8,291.43 : x
  2. Step 2: Convert to fraction form
    15,005.34/20,707.29 = 8,291.43/x
  3. Step 3: Cross multiply
    15,005.34x = 20,707.29 × 8,291.43
  4. Step 4: Simplify right side
    15,005.34x = 171,693,045.52
  5. Step 5: Solve for x
    x = 171,693,045.52/15,005.34
  6. Step 6: Final answer
    x = 11,442.13

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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.