Home / 20,123.45-27,770.47-12,574.16

Finding the Fourth Proportional to 20,123.45, 27,770.47 and 12,574.16

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Solution

The fourth proportional to 20,123.45, 27,770.47 and 12,574.16 is: 17,352.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123.45 : 27,770.47 = 12,574.16 : x
  2. Step 2: Convert to fraction form
    20,123.45/27,770.47 = 12,574.16/x
  3. Step 3: Cross multiply
    20,123.45x = 27,770.47 × 12,574.16
  4. Step 4: Simplify right side
    20,123.45x = 349,190,333.06
  5. Step 5: Solve for x
    x = 349,190,333.06/20,123.45
  6. Step 6: Final answer
    x = 17,352.41

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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.