Home / 10,814.40-16,240.80-8,355.20

Finding the Fourth Proportional to 10,814.40, 16,240.80 and 8,355.20

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Solution

The fourth proportional to 10,814.40, 16,240.80 and 8,355.20 is: 12,547.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,814.40 : 16,240.80 = 8,355.20 : x
  2. Step 2: Convert to fraction form
    10,814.40/16,240.80 = 8,355.20/x
  3. Step 3: Cross multiply
    10,814.40x = 16,240.80 × 8,355.20
  4. Step 4: Simplify right side
    10,814.40x = 135,695,132.16
  5. Step 5: Solve for x
    x = 135,695,132.16/10,814.40
  6. Step 6: Final answer
    x = 12,547.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.