Home / 15,186.52-20,956.89-8,898.76

Finding the Fourth Proportional to 15,186.52, 20,956.89 and 8,898.76

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Solution

The fourth proportional to 15,186.52, 20,956.89 and 8,898.76 is: 12,279.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,186.52 : 20,956.89 = 8,898.76 : x
  2. Step 2: Convert to fraction form
    15,186.52/20,956.89 = 8,898.76/x
  3. Step 3: Cross multiply
    15,186.52x = 20,956.89 × 8,898.76
  4. Step 4: Simplify right side
    15,186.52x = 186,490,334.46
  5. Step 5: Solve for x
    x = 186,490,334.46/15,186.52
  6. Step 6: Final answer
    x = 12,279.99

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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.