Home / 21,235.72-31,854.30-5,654.92

Finding the Fourth Proportional to 21,235.72, 31,854.30 and 5,654.92

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Solution

The fourth proportional to 21,235.72, 31,854.30 and 5,654.92 is: 8,482.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235.72 : 31,854.30 = 5,654.92 : x
  2. Step 2: Convert to fraction form
    21,235.72/31,854.30 = 5,654.92/x
  3. Step 3: Cross multiply
    21,235.72x = 31,854.30 × 5,654.92
  4. Step 4: Simplify right side
    21,235.72x = 180,133,518.16
  5. Step 5: Solve for x
    x = 180,133,518.16/21,235.72
  6. Step 6: Final answer
    x = 8,482.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.