Home / 15,621.50-21,560.23-9,001.34

Finding the Fourth Proportional to 15,621.50, 21,560.23 and 9,001.34

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Solution

The fourth proportional to 15,621.50, 21,560.23 and 9,001.34 is: 12,423.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,621.50 : 21,560.23 = 9,001.34 : x
  2. Step 2: Convert to fraction form
    15,621.50/21,560.23 = 9,001.34/x
  3. Step 3: Cross multiply
    15,621.50x = 21,560.23 × 9,001.34
  4. Step 4: Simplify right side
    15,621.50x = 194,070,960.71
  5. Step 5: Solve for x
    x = 194,070,960.71/15,621.50
  6. Step 6: Final answer
    x = 12,423.32

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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.