Home / 39,045.18-53,882.27-21,140.20

Finding the Fourth Proportional to 39,045.18, 53,882.27 and 21,140.20

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Solution

The fourth proportional to 39,045.18, 53,882.27 and 21,140.20 is: 29,173.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,045.18 : 53,882.27 = 21,140.20 : x
  2. Step 2: Convert to fraction form
    39,045.18/53,882.27 = 21,140.20/x
  3. Step 3: Cross multiply
    39,045.18x = 53,882.27 × 21,140.20
  4. Step 4: Simplify right side
    39,045.18x = 1,139,081,964.25
  5. Step 5: Solve for x
    x = 1,139,081,964.25/39,045.18
  6. Step 6: Final answer
    x = 29,173.43

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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.