Home / 15,117.30-20,859.54-8,402.91

Finding the Fourth Proportional to 15,117.30, 20,859.54 and 8,402.91

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Solution

The fourth proportional to 15,117.30, 20,859.54 and 8,402.91 is: 11,594.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,117.30 : 20,859.54 = 8,402.91 : x
  2. Step 2: Convert to fraction form
    15,117.30/20,859.54 = 8,402.91/x
  3. Step 3: Cross multiply
    15,117.30x = 20,859.54 × 8,402.91
  4. Step 4: Simplify right side
    15,117.30x = 175,280,837.26
  5. Step 5: Solve for x
    x = 175,280,837.26/15,117.30
  6. Step 6: Final answer
    x = 11,594.72

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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.