Home / 31,068.59-42,877.64-19,138.91

Finding the Fourth Proportional to 31,068.59, 42,877.64 and 19,138.91

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Solution

The fourth proportional to 31,068.59, 42,877.64 and 19,138.91 is: 26,413.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,068.59 : 42,877.64 = 19,138.91 : x
  2. Step 2: Convert to fraction form
    31,068.59/42,877.64 = 19,138.91/x
  3. Step 3: Cross multiply
    31,068.59x = 42,877.64 × 19,138.91
  4. Step 4: Simplify right side
    31,068.59x = 820,631,197.28
  5. Step 5: Solve for x
    x = 820,631,197.28/31,068.59
  6. Step 6: Final answer
    x = 26,413.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.