Home / 28,127.34-38,815.47-15,552.18

Finding the Fourth Proportional to 28,127.34, 38,815.47 and 15,552.18

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Solution

The fourth proportional to 28,127.34, 38,815.47 and 15,552.18 is: 21,461.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,127.34 : 38,815.47 = 15,552.18 : x
  2. Step 2: Convert to fraction form
    28,127.34/38,815.47 = 15,552.18/x
  3. Step 3: Cross multiply
    28,127.34x = 38,815.47 × 15,552.18
  4. Step 4: Simplify right side
    28,127.34x = 603,665,176.22
  5. Step 5: Solve for x
    x = 603,665,176.22/28,127.34
  6. Step 6: Final answer
    x = 21,461.87

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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.