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Finding the Fourth Proportional to 15,007.95, 20,711.03 and 8,293.59

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Solution

The fourth proportional to 15,007.95, 20,711.03 and 8,293.59 is: 11,445.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,007.95 : 20,711.03 = 8,293.59 : x
  2. Step 2: Convert to fraction form
    15,007.95/20,711.03 = 8,293.59/x
  3. Step 3: Cross multiply
    15,007.95x = 20,711.03 × 8,293.59
  4. Step 4: Simplify right side
    15,007.95x = 171,768,749.83
  5. Step 5: Solve for x
    x = 171,768,749.83/15,007.95
  6. Step 6: Final answer
    x = 11,445.18

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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.