Home / 15,471.18-21,296.04-13,478.28

Finding the Fourth Proportional to 15,471.18, 21,296.04 and 13,478.28

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Solution

The fourth proportional to 15,471.18, 21,296.04 and 13,478.28 is: 18,552.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,471.18 : 21,296.04 = 13,478.28 : x
  2. Step 2: Convert to fraction form
    15,471.18/21,296.04 = 13,478.28/x
  3. Step 3: Cross multiply
    15,471.18x = 21,296.04 × 13,478.28
  4. Step 4: Simplify right side
    15,471.18x = 287,033,990.01
  5. Step 5: Solve for x
    x = 287,033,990.01/15,471.18
  6. Step 6: Final answer
    x = 18,552.82

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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.