Home / 30,443.28-42,024.66-18,510.42

Finding the Fourth Proportional to 30,443.28, 42,024.66 and 18,510.42

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Solution

The fourth proportional to 30,443.28, 42,024.66 and 18,510.42 is: 25,552.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,443.28 : 42,024.66 = 18,510.42 : x
  2. Step 2: Convert to fraction form
    30,443.28/42,024.66 = 18,510.42/x
  3. Step 3: Cross multiply
    30,443.28x = 42,024.66 × 18,510.42
  4. Step 4: Simplify right side
    30,443.28x = 777,894,106.96
  5. Step 5: Solve for x
    x = 777,894,106.96/30,443.28
  6. Step 6: Final answer
    x = 25,552.24

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Double scale
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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.