Home / 20,851.49-31,288.48-15,153.08

Finding the Fourth Proportional to 20,851.49, 31,288.48 and 15,153.08

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Solution

The fourth proportional to 20,851.49, 31,288.48 and 15,153.08 is: 22,737.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,851.49 : 31,288.48 = 15,153.08 : x
  2. Step 2: Convert to fraction form
    20,851.49/31,288.48 = 15,153.08/x
  3. Step 3: Cross multiply
    20,851.49x = 31,288.48 × 15,153.08
  4. Step 4: Simplify right side
    20,851.49x = 474,116,646.19
  5. Step 5: Solve for x
    x = 474,116,646.19/20,851.49
  6. Step 6: Final answer
    x = 22,737.78

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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.