Home / 31,141.95-42,975.87-18,566.70

Finding the Fourth Proportional to 31,141.95, 42,975.87 and 18,566.70

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Solution

The fourth proportional to 31,141.95, 42,975.87 and 18,566.70 is: 25,622.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,141.95 : 42,975.87 = 18,566.70 : x
  2. Step 2: Convert to fraction form
    31,141.95/42,975.87 = 18,566.70/x
  3. Step 3: Cross multiply
    31,141.95x = 42,975.87 × 18,566.70
  4. Step 4: Simplify right side
    31,141.95x = 797,920,085.53
  5. Step 5: Solve for x
    x = 797,920,085.53/31,141.95
  6. Step 6: Final answer
    x = 25,622.03

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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.