Home / 11,280.40-15,564.30-6,561.88

Finding the Fourth Proportional to 11,280.40, 15,564.30 and 6,561.88

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Solution

The fourth proportional to 11,280.40, 15,564.30 and 6,561.88 is: 9,053.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,280.40 : 15,564.30 = 6,561.88 : x
  2. Step 2: Convert to fraction form
    11,280.40/15,564.30 = 6,561.88/x
  3. Step 3: Cross multiply
    11,280.40x = 15,564.30 × 6,561.88
  4. Step 4: Simplify right side
    11,280.40x = 102,131,068.88
  5. Step 5: Solve for x
    x = 102,131,068.88/11,280.40
  6. Step 6: Final answer
    x = 9,053.85

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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.