Home / 10,861.32-14,979.68-9,130.08

Finding the Fourth Proportional to 10,861.32, 14,979.68 and 9,130.08

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Solution

The fourth proportional to 10,861.32, 14,979.68 and 9,130.08 is: 12,591.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,861.32 : 14,979.68 = 9,130.08 : x
  2. Step 2: Convert to fraction form
    10,861.32/14,979.68 = 9,130.08/x
  3. Step 3: Cross multiply
    10,861.32x = 14,979.68 × 9,130.08
  4. Step 4: Simplify right side
    10,861.32x = 136,765,676.77
  5. Step 5: Solve for x
    x = 136,765,676.77/10,861.32
  6. Step 6: Final answer
    x = 12,591.99

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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.