Home / 31,000.12-42,780.24-16,852.93

Finding the Fourth Proportional to 31,000.12, 42,780.24 and 16,852.93

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Solution

The fourth proportional to 31,000.12, 42,780.24 and 16,852.93 is: 23,257.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,000.12 : 42,780.24 = 16,852.93 : x
  2. Step 2: Convert to fraction form
    31,000.12/42,780.24 = 16,852.93/x
  3. Step 3: Cross multiply
    31,000.12x = 42,780.24 × 16,852.93
  4. Step 4: Simplify right side
    31,000.12x = 720,972,390.10
  5. Step 5: Solve for x
    x = 720,972,390.10/31,000.12
  6. Step 6: Final answer
    x = 23,257.08

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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.