Home / 31,059.16-42,860.55-16,911.70

Finding the Fourth Proportional to 31,059.16, 42,860.55 and 16,911.70

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Solution

The fourth proportional to 31,059.16, 42,860.55 and 16,911.70 is: 23,337.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,059.16 : 42,860.55 = 16,911.70 : x
  2. Step 2: Convert to fraction form
    31,059.16/42,860.55 = 16,911.70/x
  3. Step 3: Cross multiply
    31,059.16x = 42,860.55 × 16,911.70
  4. Step 4: Simplify right side
    31,059.16x = 724,844,763.44
  5. Step 5: Solve for x
    x = 724,844,763.44/31,059.16
  6. Step 6: Final answer
    x = 23,337.55

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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.