Home / 42,007.78-63,022.80-18,305.15

Finding the Fourth Proportional to 42,007.78, 63,022.80 and 18,305.15

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Solution

The fourth proportional to 42,007.78, 63,022.80 and 18,305.15 is: 27,462.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,007.78 : 63,022.80 = 18,305.15 : x
  2. Step 2: Convert to fraction form
    42,007.78/63,022.80 = 18,305.15/x
  3. Step 3: Cross multiply
    42,007.78x = 63,022.80 × 18,305.15
  4. Step 4: Simplify right side
    42,007.78x = 1,153,641,807.42
  5. Step 5: Solve for x
    x = 1,153,641,807.42/42,007.78
  6. Step 6: Final answer
    x = 27,462.58

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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.