Home / 8,555.80-12,833.70-7,389.40

Finding the Fourth Proportional to 8,555.80, 12,833.70 and 7,389.40

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Solution

The fourth proportional to 8,555.80, 12,833.70 and 7,389.40 is: 11,084.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,555.80 : 12,833.70 = 7,389.40 : x
  2. Step 2: Convert to fraction form
    8,555.80/12,833.70 = 7,389.40/x
  3. Step 3: Cross multiply
    8,555.80x = 12,833.70 × 7,389.40
  4. Step 4: Simplify right side
    8,555.80x = 94,833,342.78
  5. Step 5: Solve for x
    x = 94,833,342.78/8,555.80
  6. Step 6: Final answer
    x = 11,084.10

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Similar ratio
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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.