Home / 31,011.20-42,795.49-16,864.05

Finding the Fourth Proportional to 31,011.20, 42,795.49 and 16,864.05

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Solution

The fourth proportional to 31,011.20, 42,795.49 and 16,864.05 is: 23,272.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,011.20 : 42,795.49 = 16,864.05 : x
  2. Step 2: Convert to fraction form
    31,011.20/42,795.49 = 16,864.05/x
  3. Step 3: Cross multiply
    31,011.20x = 42,795.49 × 16,864.05
  4. Step 4: Simplify right side
    31,011.20x = 721,705,192.35
  5. Step 5: Solve for x
    x = 721,705,192.35/31,011.20
  6. Step 6: Final answer
    x = 23,272.40

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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.