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Finding the Fourth Proportional to 15,271.68, 22,891.08 and 9,990.06

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Solution

The fourth proportional to 15,271.68, 22,891.08 and 9,990.06 is: 14,974.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,271.68 : 22,891.08 = 9,990.06 : x
  2. Step 2: Convert to fraction form
    15,271.68/22,891.08 = 9,990.06/x
  3. Step 3: Cross multiply
    15,271.68x = 22,891.08 × 9,990.06
  4. Step 4: Simplify right side
    15,271.68x = 228,683,262.66
  5. Step 5: Solve for x
    x = 228,683,262.66/15,271.68
  6. Step 6: Final answer
    x = 14,974.34

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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.