Home / 42,005.95-63,020.60-18,315.56

Finding the Fourth Proportional to 42,005.95, 63,020.60 and 18,315.56

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Solution

The fourth proportional to 42,005.95, 63,020.60 and 18,315.56 is: 27,478.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,005.95 : 63,020.60 = 18,315.56 : x
  2. Step 2: Convert to fraction form
    42,005.95/63,020.60 = 18,315.56/x
  3. Step 3: Cross multiply
    42,005.95x = 63,020.60 × 18,315.56
  4. Step 4: Simplify right side
    42,005.95x = 1,154,257,488.96
  5. Step 5: Solve for x
    x = 1,154,257,488.96/42,005.95
  6. Step 6: Final answer
    x = 27,478.43

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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.