Home / 10,983.72-15,155.16-6,508.86

Finding the Fourth Proportional to 10,983.72, 15,155.16 and 6,508.86

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Solution

The fourth proportional to 10,983.72, 15,155.16 and 6,508.86 is: 8,980.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,983.72 : 15,155.16 = 6,508.86 : x
  2. Step 2: Convert to fraction form
    10,983.72/15,155.16 = 6,508.86/x
  3. Step 3: Cross multiply
    10,983.72x = 15,155.16 × 6,508.86
  4. Step 4: Simplify right side
    10,983.72x = 98,642,814.72
  5. Step 5: Solve for x
    x = 98,642,814.72/10,983.72
  6. Step 6: Final answer
    x = 8,980.82

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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.