Home / 31,135.74-42,967.17-16,988.46

Finding the Fourth Proportional to 31,135.74, 42,967.17 and 16,988.46

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Solution

The fourth proportional to 31,135.74, 42,967.17 and 16,988.46 is: 23,443.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,135.74 : 42,967.17 = 16,988.46 : x
  2. Step 2: Convert to fraction form
    31,135.74/42,967.17 = 16,988.46/x
  3. Step 3: Cross multiply
    31,135.74x = 42,967.17 × 16,988.46
  4. Step 4: Simplify right side
    31,135.74x = 729,946,048.86
  5. Step 5: Solve for x
    x = 729,946,048.86/31,135.74
  6. Step 6: Final answer
    x = 23,443.99

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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.