Home / 15,887.75-21,925.71-8,717.92

Finding the Fourth Proportional to 15,887.75, 21,925.71 and 8,717.92

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Solution

The fourth proportional to 15,887.75, 21,925.71 and 8,717.92 is: 12,031.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,887.75 : 21,925.71 = 8,717.92 : x
  2. Step 2: Convert to fraction form
    15,887.75/21,925.71 = 8,717.92/x
  3. Step 3: Cross multiply
    15,887.75x = 21,925.71 × 8,717.92
  4. Step 4: Simplify right side
    15,887.75x = 191,146,530.91
  5. Step 5: Solve for x
    x = 191,146,530.91/15,887.75
  6. Step 6: Final answer
    x = 12,031.07

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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.