Home / 21,521.29-32,280.11-7,477.71

Finding the Fourth Proportional to 21,521.29, 32,280.11 and 7,477.71

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Solution

The fourth proportional to 21,521.29, 32,280.11 and 7,477.71 is: 11,215.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,521.29 : 32,280.11 = 7,477.71 : x
  2. Step 2: Convert to fraction form
    21,521.29/32,280.11 = 7,477.71/x
  3. Step 3: Cross multiply
    21,521.29x = 32,280.11 × 7,477.71
  4. Step 4: Simplify right side
    21,521.29x = 241,381,301.35
  5. Step 5: Solve for x
    x = 241,381,301.35/21,521.29
  6. Step 6: Final answer
    x = 11,215.93

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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.