Home / 10,128.95-15,192.90-3,554.63

Finding the Fourth Proportional to 10,128.95, 15,192.90 and 3,554.63

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Solution

The fourth proportional to 10,128.95, 15,192.90 and 3,554.63 is: 5,331.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,128.95 : 15,192.90 = 3,554.63 : x
  2. Step 2: Convert to fraction form
    10,128.95/15,192.90 = 3,554.63/x
  3. Step 3: Cross multiply
    10,128.95x = 15,192.90 × 3,554.63
  4. Step 4: Simplify right side
    10,128.95x = 54,005,062.16
  5. Step 5: Solve for x
    x = 54,005,062.16/10,128.95
  6. Step 6: Final answer
    x = 5,331.76

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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.