Home / 21,518.02-32,247.84-10,402.57

Finding the Fourth Proportional to 21,518.02, 32,247.84 and 10,402.57

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Solution

The fourth proportional to 21,518.02, 32,247.84 and 10,402.57 is: 15,589.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,518.02 : 32,247.84 = 10,402.57 : x
  2. Step 2: Convert to fraction form
    21,518.02/32,247.84 = 10,402.57/x
  3. Step 3: Cross multiply
    21,518.02x = 32,247.84 × 10,402.57
  4. Step 4: Simplify right side
    21,518.02x = 335,460,412.95
  5. Step 5: Solve for x
    x = 335,460,412.95/21,518.02
  6. Step 6: Final answer
    x = 15,589.74

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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.