Home / 14,391.91-21,573.28-6,990.13

Finding the Fourth Proportional to 14,391.91, 21,573.28 and 6,990.13

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Solution

The fourth proportional to 14,391.91, 21,573.28 and 6,990.13 is: 10,478.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,391.91 : 21,573.28 = 6,990.13 : x
  2. Step 2: Convert to fraction form
    14,391.91/21,573.28 = 6,990.13/x
  3. Step 3: Cross multiply
    14,391.91x = 21,573.28 × 6,990.13
  4. Step 4: Simplify right side
    14,391.91x = 150,799,888.91
  5. Step 5: Solve for x
    x = 150,799,888.91/14,391.91
  6. Step 6: Final answer
    x = 10,478.10

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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.