Home / 39,761.72-54,870.08-21,856.74

Finding the Fourth Proportional to 39,761.72, 54,870.08 and 21,856.74

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Solution

The fourth proportional to 39,761.72, 54,870.08 and 21,856.74 is: 30,161.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,761.72 : 54,870.08 = 21,856.74 : x
  2. Step 2: Convert to fraction form
    39,761.72/54,870.08 = 21,856.74/x
  3. Step 3: Cross multiply
    39,761.72x = 54,870.08 × 21,856.74
  4. Step 4: Simplify right side
    39,761.72x = 1,199,281,072.34
  5. Step 5: Solve for x
    x = 1,199,281,072.34/39,761.72
  6. Step 6: Final answer
    x = 30,161.70

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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.