Home / 20,889.18-31,298.58-10,345.14

Finding the Fourth Proportional to 20,889.18, 31,298.58 and 10,345.14

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Solution

The fourth proportional to 20,889.18, 31,298.58 and 10,345.14 is: 15,500.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,889.18 : 31,298.58 = 10,345.14 : x
  2. Step 2: Convert to fraction form
    20,889.18/31,298.58 = 10,345.14/x
  3. Step 3: Cross multiply
    20,889.18x = 31,298.58 × 10,345.14
  4. Step 4: Simplify right side
    20,889.18x = 323,788,191.90
  5. Step 5: Solve for x
    x = 323,788,191.90/20,889.18
  6. Step 6: Final answer
    x = 15,500.28

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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.