Home / 21,089.80-31,624.96-6,294.88

Finding the Fourth Proportional to 21,089.80, 31,624.96 and 6,294.88

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Solution

The fourth proportional to 21,089.80, 31,624.96 and 6,294.88 is: 9,439.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,089.80 : 31,624.96 = 6,294.88 : x
  2. Step 2: Convert to fraction form
    21,089.80/31,624.96 = 6,294.88/x
  3. Step 3: Cross multiply
    21,089.80x = 31,624.96 × 6,294.88
  4. Step 4: Simplify right side
    21,089.80x = 199,075,328.20
  5. Step 5: Solve for x
    x = 199,075,328.20/21,089.80
  6. Step 6: Final answer
    x = 9,439.41

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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.