Home / 42,939.68-64,416.39-13,364.34

Finding the Fourth Proportional to 42,939.68, 64,416.39 and 13,364.34

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Solution

The fourth proportional to 42,939.68, 64,416.39 and 13,364.34 is: 20,048.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,939.68 : 64,416.39 = 13,364.34 : x
  2. Step 2: Convert to fraction form
    42,939.68/64,416.39 = 13,364.34/x
  3. Step 3: Cross multiply
    42,939.68x = 64,416.39 × 13,364.34
  4. Step 4: Simplify right side
    42,939.68x = 860,882,537.53
  5. Step 5: Solve for x
    x = 860,882,537.53/42,939.68
  6. Step 6: Final answer
    x = 20,048.65

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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.