Home / 13,088.92-18,068.70-8,612.88

Finding the Fourth Proportional to 13,088.92, 18,068.70 and 8,612.88

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Solution

The fourth proportional to 13,088.92, 18,068.70 and 8,612.88 is: 11,889.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,088.92 : 18,068.70 = 8,612.88 : x
  2. Step 2: Convert to fraction form
    13,088.92/18,068.70 = 8,612.88/x
  3. Step 3: Cross multiply
    13,088.92x = 18,068.70 × 8,612.88
  4. Step 4: Simplify right side
    13,088.92x = 155,623,544.86
  5. Step 5: Solve for x
    x = 155,623,544.86/13,088.92
  6. Step 6: Final answer
    x = 11,889.72

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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.