Home / 21,515.60-32,276.64-6,721.32

Finding the Fourth Proportional to 21,515.60, 32,276.64 and 6,721.32

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Solution

The fourth proportional to 21,515.60, 32,276.64 and 6,721.32 is: 10,082.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,515.60 : 32,276.64 = 6,721.32 : x
  2. Step 2: Convert to fraction form
    21,515.60/32,276.64 = 6,721.32/x
  3. Step 3: Cross multiply
    21,515.60x = 32,276.64 × 6,721.32
  4. Step 4: Simplify right side
    21,515.60x = 216,941,625.96
  5. Step 5: Solve for x
    x = 216,941,625.96/21,515.60
  6. Step 6: Final answer
    x = 10,082.99

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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.