Home / 21,602.31-32,330.28-13,287.60

Finding the Fourth Proportional to 21,602.31, 32,330.28 and 13,287.60

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Solution

The fourth proportional to 21,602.31, 32,330.28 and 13,287.60 is: 19,886.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,602.31 : 32,330.28 = 13,287.60 : x
  2. Step 2: Convert to fraction form
    21,602.31/32,330.28 = 13,287.60/x
  3. Step 3: Cross multiply
    21,602.31x = 32,330.28 × 13,287.60
  4. Step 4: Simplify right side
    21,602.31x = 429,591,828.53
  5. Step 5: Solve for x
    x = 429,591,828.53/21,602.31
  6. Step 6: Final answer
    x = 19,886.38

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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.