Home / 8,988.06-13,480.47-6,380.40

Finding the Fourth Proportional to 8,988.06, 13,480.47 and 6,380.40

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Solution

The fourth proportional to 8,988.06, 13,480.47 and 6,380.40 is: 9,569.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,988.06 : 13,480.47 = 6,380.40 : x
  2. Step 2: Convert to fraction form
    8,988.06/13,480.47 = 6,380.40/x
  3. Step 3: Cross multiply
    8,988.06x = 13,480.47 × 6,380.40
  4. Step 4: Simplify right side
    8,988.06x = 86,010,790.79
  5. Step 5: Solve for x
    x = 86,010,790.79/8,988.06
  6. Step 6: Final answer
    x = 9,569.45

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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.