Home / 21,298.23-31,898.12-20,560.12

Finding the Fourth Proportional to 21,298.23, 31,898.12 and 20,560.12

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Solution

The fourth proportional to 21,298.23, 31,898.12 and 20,560.12 is: 30,792.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,298.23 : 31,898.12 = 20,560.12 : x
  2. Step 2: Convert to fraction form
    21,298.23/31,898.12 = 20,560.12/x
  3. Step 3: Cross multiply
    21,298.23x = 31,898.12 × 20,560.12
  4. Step 4: Simplify right side
    21,298.23x = 655,829,052.24
  5. Step 5: Solve for x
    x = 655,829,052.24/21,298.23
  6. Step 6: Final answer
    x = 30,792.65

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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.