Home / 21,968.64-30,308.28-12,532.20

Finding the Fourth Proportional to 21,968.64, 30,308.28 and 12,532.20

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Solution

The fourth proportional to 21,968.64, 30,308.28 and 12,532.20 is: 17,289.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,968.64 : 30,308.28 = 12,532.20 : x
  2. Step 2: Convert to fraction form
    21,968.64/30,308.28 = 12,532.20/x
  3. Step 3: Cross multiply
    21,968.64x = 30,308.28 × 12,532.20
  4. Step 4: Simplify right side
    21,968.64x = 379,829,426.62
  5. Step 5: Solve for x
    x = 379,829,426.62/21,968.64
  6. Step 6: Final answer
    x = 17,289.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.