Home / 8,909.90-13,364.88-6,128.18

Finding the Fourth Proportional to 8,909.90, 13,364.88 and 6,128.18

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Solution

The fourth proportional to 8,909.90, 13,364.88 and 6,128.18 is: 9,192.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,909.90 : 13,364.88 = 6,128.18 : x
  2. Step 2: Convert to fraction form
    8,909.90/13,364.88 = 6,128.18/x
  3. Step 3: Cross multiply
    8,909.90x = 13,364.88 × 6,128.18
  4. Step 4: Simplify right side
    8,909.90x = 81,902,390.32
  5. Step 5: Solve for x
    x = 81,902,390.32/8,909.90
  6. Step 6: Final answer
    x = 9,192.29

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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.