Home / 39,478.27-54,480.02-21,328.99

Finding the Fourth Proportional to 39,478.27, 54,480.02 and 21,328.99

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Solution

The fourth proportional to 39,478.27, 54,480.02 and 21,328.99 is: 29,434.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,478.27 : 54,480.02 = 21,328.99 : x
  2. Step 2: Convert to fraction form
    39,478.27/54,480.02 = 21,328.99/x
  3. Step 3: Cross multiply
    39,478.27x = 54,480.02 × 21,328.99
  4. Step 4: Simplify right side
    39,478.27x = 1,162,003,801.78
  5. Step 5: Solve for x
    x = 1,162,003,801.78/39,478.27
  6. Step 6: Final answer
    x = 29,434.01

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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.