Home / 34,145.19-47,123.45-20,719.83

Finding the Fourth Proportional to 34,145.19, 47,123.45 and 20,719.83

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Solution

The fourth proportional to 34,145.19, 47,123.45 and 20,719.83 is: 28,595.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,145.19 : 47,123.45 = 20,719.83 : x
  2. Step 2: Convert to fraction form
    34,145.19/47,123.45 = 20,719.83/x
  3. Step 3: Cross multiply
    34,145.19x = 47,123.45 × 20,719.83
  4. Step 4: Simplify right side
    34,145.19x = 976,389,769.41
  5. Step 5: Solve for x
    x = 976,389,769.41/34,145.19
  6. Step 6: Final answer
    x = 28,595.24

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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.