Home / 38,689.30-53,391.02-21,693.52

Finding the Fourth Proportional to 38,689.30, 53,391.02 and 21,693.52

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Solution

The fourth proportional to 38,689.30, 53,391.02 and 21,693.52 is: 29,936.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,689.30 : 53,391.02 = 21,693.52 : x
  2. Step 2: Convert to fraction form
    38,689.30/53,391.02 = 21,693.52/x
  3. Step 3: Cross multiply
    38,689.30x = 53,391.02 × 21,693.52
  4. Step 4: Simplify right side
    38,689.30x = 1,158,239,301.50
  5. Step 5: Solve for x
    x = 1,158,239,301.50/38,689.30
  6. Step 6: Final answer
    x = 29,936.94

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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.