Home / 20,945.28-31,417.10-7,094.28

Finding the Fourth Proportional to 20,945.28, 31,417.10 and 7,094.28

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Solution

The fourth proportional to 20,945.28, 31,417.10 and 7,094.28 is: 10,641.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,945.28 : 31,417.10 = 7,094.28 : x
  2. Step 2: Convert to fraction form
    20,945.28/31,417.10 = 7,094.28/x
  3. Step 3: Cross multiply
    20,945.28x = 31,417.10 × 7,094.28
  4. Step 4: Simplify right side
    20,945.28x = 222,881,704.19
  5. Step 5: Solve for x
    x = 222,881,704.19/20,945.28
  6. Step 6: Final answer
    x = 10,641.14

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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.