Home / 11,125.60-16,666.80-6,503.20

Finding the Fourth Proportional to 11,125.60, 16,666.80 and 6,503.20

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Solution

The fourth proportional to 11,125.60, 16,666.80 and 6,503.20 is: 9,742.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,125.60 : 16,666.80 = 6,503.20 : x
  2. Step 2: Convert to fraction form
    11,125.60/16,666.80 = 6,503.20/x
  3. Step 3: Cross multiply
    11,125.60x = 16,666.80 × 6,503.20
  4. Step 4: Simplify right side
    11,125.60x = 108,387,533.76
  5. Step 5: Solve for x
    x = 108,387,533.76/11,125.60
  6. Step 6: Final answer
    x = 9,742.17

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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.