Home / 42,017.09-63,019.15-18,639.41

Finding the Fourth Proportional to 42,017.09, 63,019.15 and 18,639.41

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Solution

The fourth proportional to 42,017.09, 63,019.15 and 18,639.41 is: 27,956.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,017.09 : 63,019.15 = 18,639.41 : x
  2. Step 2: Convert to fraction form
    42,017.09/63,019.15 = 18,639.41/x
  3. Step 3: Cross multiply
    42,017.09x = 63,019.15 × 18,639.41
  4. Step 4: Simplify right side
    42,017.09x = 1,174,639,774.70
  5. Step 5: Solve for x
    x = 1,174,639,774.70/42,017.09
  6. Step 6: Final answer
    x = 27,956.24

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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.