Home / 31,135.95-42,967.40-16,988.49

Finding the Fourth Proportional to 31,135.95, 42,967.40 and 16,988.49

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Solution

The fourth proportional to 31,135.95, 42,967.40 and 16,988.49 is: 23,444.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,135.95 : 42,967.40 = 16,988.49 : x
  2. Step 2: Convert to fraction form
    31,135.95/42,967.40 = 16,988.49/x
  3. Step 3: Cross multiply
    31,135.95x = 42,967.40 × 16,988.49
  4. Step 4: Simplify right side
    31,135.95x = 729,951,160.28
  5. Step 5: Solve for x
    x = 729,951,160.28/31,135.95
  6. Step 6: Final answer
    x = 23,444.00

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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.