Home / 39,820.38-59,705.49-18,747.72

Finding the Fourth Proportional to 39,820.38, 59,705.49 and 18,747.72

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Solution

The fourth proportional to 39,820.38, 59,705.49 and 18,747.72 is: 28,109.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,820.38 : 59,705.49 = 18,747.72 : x
  2. Step 2: Convert to fraction form
    39,820.38/59,705.49 = 18,747.72/x
  3. Step 3: Cross multiply
    39,820.38x = 59,705.49 × 18,747.72
  4. Step 4: Simplify right side
    39,820.38x = 1,119,341,808.98
  5. Step 5: Solve for x
    x = 1,119,341,808.98/39,820.38
  6. Step 6: Final answer
    x = 28,109.77

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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.