Home / 31,042.50-42,838.65-16,895.45

Finding the Fourth Proportional to 31,042.50, 42,838.65 and 16,895.45

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Solution

The fourth proportional to 31,042.50, 42,838.65 and 16,895.45 is: 23,315.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,042.50 : 42,838.65 = 16,895.45 : x
  2. Step 2: Convert to fraction form
    31,042.50/42,838.65 = 16,895.45/x
  3. Step 3: Cross multiply
    31,042.50x = 42,838.65 × 16,895.45
  4. Step 4: Simplify right side
    31,042.50x = 723,778,054.95
  5. Step 5: Solve for x
    x = 723,778,054.95/31,042.50
  6. Step 6: Final answer
    x = 23,315.71

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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.