Home / 42,339.47-63,515.39-12,759.59

Finding the Fourth Proportional to 42,339.47, 63,515.39 and 12,759.59

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Solution

The fourth proportional to 42,339.47, 63,515.39 and 12,759.59 is: 19,141.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,339.47 : 63,515.39 = 12,759.59 : x
  2. Step 2: Convert to fraction form
    42,339.47/63,515.39 = 12,759.59/x
  3. Step 3: Cross multiply
    42,339.47x = 63,515.39 × 12,759.59
  4. Step 4: Simplify right side
    42,339.47x = 810,430,430.08
  5. Step 5: Solve for x
    x = 810,430,430.08/42,339.47
  6. Step 6: Final answer
    x = 19,141.25

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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.