Home / 31,070.85-42,877.77-16,923.70

Finding the Fourth Proportional to 31,070.85, 42,877.77 and 16,923.70

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Solution

The fourth proportional to 31,070.85, 42,877.77 and 16,923.70 is: 23,354.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,070.85 : 42,877.77 = 16,923.70 : x
  2. Step 2: Convert to fraction form
    31,070.85/42,877.77 = 16,923.70/x
  3. Step 3: Cross multiply
    31,070.85x = 42,877.77 × 16,923.70
  4. Step 4: Simplify right side
    31,070.85x = 725,650,516.15
  5. Step 5: Solve for x
    x = 725,650,516.15/31,070.85
  6. Step 6: Final answer
    x = 23,354.70

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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.