Home / 21,656.28-32,483.48-12,871.84

Finding the Fourth Proportional to 21,656.28, 32,483.48 and 12,871.84

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Solution

The fourth proportional to 21,656.28, 32,483.48 and 12,871.84 is: 19,307.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,656.28 : 32,483.48 = 12,871.84 : x
  2. Step 2: Convert to fraction form
    21,656.28/32,483.48 = 12,871.84/x
  3. Step 3: Cross multiply
    21,656.28x = 32,483.48 × 12,871.84
  4. Step 4: Simplify right side
    21,656.28x = 418,122,157.20
  5. Step 5: Solve for x
    x = 418,122,157.20/21,656.28
  6. Step 6: Final answer
    x = 19,307.20

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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.