Home / 10,186.04-15,209.74-8,990.12

Finding the Fourth Proportional to 10,186.04, 15,209.74 and 8,990.12

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Solution

The fourth proportional to 10,186.04, 15,209.74 and 8,990.12 is: 13,424.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,186.04 : 15,209.74 = 8,990.12 : x
  2. Step 2: Convert to fraction form
    10,186.04/15,209.74 = 8,990.12/x
  3. Step 3: Cross multiply
    10,186.04x = 15,209.74 × 8,990.12
  4. Step 4: Simplify right side
    10,186.04x = 136,737,387.77
  5. Step 5: Solve for x
    x = 136,737,387.77/10,186.04
  6. Step 6: Final answer
    x = 13,424.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.