Home / 15,519.04-21,423.60-9,933.28

Finding the Fourth Proportional to 15,519.04, 21,423.60 and 9,933.28

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Solution

The fourth proportional to 15,519.04, 21,423.60 and 9,933.28 is: 13,712.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,519.04 : 21,423.60 = 9,933.28 : x
  2. Step 2: Convert to fraction form
    15,519.04/21,423.60 = 9,933.28/x
  3. Step 3: Cross multiply
    15,519.04x = 21,423.60 × 9,933.28
  4. Step 4: Simplify right side
    15,519.04x = 212,806,617.41
  5. Step 5: Solve for x
    x = 212,806,617.41/15,519.04
  6. Step 6: Final answer
    x = 13,712.61

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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.