Home / 21,521.20-32,291.53-10,985.78

Finding the Fourth Proportional to 21,521.20, 32,291.53 and 10,985.78

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Solution

The fourth proportional to 21,521.20, 32,291.53 and 10,985.78 is: 16,483.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,521.20 : 32,291.53 = 10,985.78 : x
  2. Step 2: Convert to fraction form
    21,521.20/32,291.53 = 10,985.78/x
  3. Step 3: Cross multiply
    21,521.20x = 32,291.53 × 10,985.78
  4. Step 4: Simplify right side
    21,521.20x = 354,747,482.99
  5. Step 5: Solve for x
    x = 354,747,482.99/21,521.20
  6. Step 6: Final answer
    x = 16,483.63

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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.