Home / 15,587.44-21,510.66-8,513.86

Finding the Fourth Proportional to 15,587.44, 21,510.66 and 8,513.86

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Solution

The fourth proportional to 15,587.44, 21,510.66 and 8,513.86 is: 11,749.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,587.44 : 21,510.66 = 8,513.86 : x
  2. Step 2: Convert to fraction form
    15,587.44/21,510.66 = 8,513.86/x
  3. Step 3: Cross multiply
    15,587.44x = 21,510.66 × 8,513.86
  4. Step 4: Simplify right side
    15,587.44x = 183,138,766.23
  5. Step 5: Solve for x
    x = 183,138,766.23/15,587.44
  6. Step 6: Final answer
    x = 11,749.13

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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.