Home / 21,000.12-31,482.30-9,306.96

Finding the Fourth Proportional to 21,000.12, 31,482.30 and 9,306.96

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Solution

The fourth proportional to 21,000.12, 31,482.30 and 9,306.96 is: 13,952.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000.12 : 31,482.30 = 9,306.96 : x
  2. Step 2: Convert to fraction form
    21,000.12/31,482.30 = 9,306.96/x
  3. Step 3: Cross multiply
    21,000.12x = 31,482.30 × 9,306.96
  4. Step 4: Simplify right side
    21,000.12x = 293,004,506.81
  5. Step 5: Solve for x
    x = 293,004,506.81/21,000.12
  6. Step 6: Final answer
    x = 13,952.52

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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.