Home / 39,280.19-54,207.81-21,376.35

Finding the Fourth Proportional to 39,280.19, 54,207.81 and 21,376.35

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Solution

The fourth proportional to 39,280.19, 54,207.81 and 21,376.35 is: 29,499.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,280.19 : 54,207.81 = 21,376.35 : x
  2. Step 2: Convert to fraction form
    39,280.19/54,207.81 = 21,376.35/x
  3. Step 3: Cross multiply
    39,280.19x = 54,207.81 × 21,376.35
  4. Step 4: Simplify right side
    39,280.19x = 1,158,765,119.29
  5. Step 5: Solve for x
    x = 1,158,765,119.29/39,280.19
  6. Step 6: Final answer
    x = 29,499.99

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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.