Home / 10,666.12-14,701.60-7,128.04

Finding the Fourth Proportional to 10,666.12, 14,701.60 and 7,128.04

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Solution

The fourth proportional to 10,666.12, 14,701.60 and 7,128.04 is: 9,824.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,666.12 : 14,701.60 = 7,128.04 : x
  2. Step 2: Convert to fraction form
    10,666.12/14,701.60 = 7,128.04/x
  3. Step 3: Cross multiply
    10,666.12x = 14,701.60 × 7,128.04
  4. Step 4: Simplify right side
    10,666.12x = 104,793,592.86
  5. Step 5: Solve for x
    x = 104,793,592.86/10,666.12
  6. Step 6: Final answer
    x = 9,824.90

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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.