Home / 21,008.46-31,518.80-6,217.76

Finding the Fourth Proportional to 21,008.46, 31,518.80 and 6,217.76

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Solution

The fourth proportional to 21,008.46, 31,518.80 and 6,217.76 is: 9,328.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,008.46 : 31,518.80 = 6,217.76 : x
  2. Step 2: Convert to fraction form
    21,008.46/31,518.80 = 6,217.76/x
  3. Step 3: Cross multiply
    21,008.46x = 31,518.80 × 6,217.76
  4. Step 4: Simplify right side
    21,008.46x = 195,976,333.89
  5. Step 5: Solve for x
    x = 195,976,333.89/21,008.46
  6. Step 6: Final answer
    x = 9,328.45

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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.