Home / 15,458.29-21,316.38-13,227.55

Finding the Fourth Proportional to 15,458.29, 21,316.38 and 13,227.55

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Solution

The fourth proportional to 15,458.29, 21,316.38 and 13,227.55 is: 18,240.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,458.29 : 21,316.38 = 13,227.55 : x
  2. Step 2: Convert to fraction form
    15,458.29/21,316.38 = 13,227.55/x
  3. Step 3: Cross multiply
    15,458.29x = 21,316.38 × 13,227.55
  4. Step 4: Simplify right side
    15,458.29x = 281,963,482.27
  5. Step 5: Solve for x
    x = 281,963,482.27/15,458.29
  6. Step 6: Final answer
    x = 18,240.28

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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.