Home / 42,369.72-63,555.22-20,185.40

Finding the Fourth Proportional to 42,369.72, 63,555.22 and 20,185.40

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Solution

The fourth proportional to 42,369.72, 63,555.22 and 20,185.40 is: 30,278.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,369.72 : 63,555.22 = 20,185.40 : x
  2. Step 2: Convert to fraction form
    42,369.72/63,555.22 = 20,185.40/x
  3. Step 3: Cross multiply
    42,369.72x = 63,555.22 × 20,185.40
  4. Step 4: Simplify right side
    42,369.72x = 1,282,887,537.79
  5. Step 5: Solve for x
    x = 1,282,887,537.79/42,369.72
  6. Step 6: Final answer
    x = 30,278.40

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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.