Home / 13,088.16-18,060.30-7,785.90

Finding the Fourth Proportional to 13,088.16, 18,060.30 and 7,785.90

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Solution

The fourth proportional to 13,088.16, 18,060.30 and 7,785.90 is: 10,743.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,088.16 : 18,060.30 = 7,785.90 : x
  2. Step 2: Convert to fraction form
    13,088.16/18,060.30 = 7,785.90/x
  3. Step 3: Cross multiply
    13,088.16x = 18,060.30 × 7,785.90
  4. Step 4: Simplify right side
    13,088.16x = 140,615,689.77
  5. Step 5: Solve for x
    x = 140,615,689.77/13,088.16
  6. Step 6: Final answer
    x = 10,743.73

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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.