Home / 18,139.73-25,032.70-9,963.47

Finding the Fourth Proportional to 18,139.73, 25,032.70 and 9,963.47

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Solution

The fourth proportional to 18,139.73, 25,032.70 and 9,963.47 is: 13,749.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.73 : 25,032.70 = 9,963.47 : x
  2. Step 2: Convert to fraction form
    18,139.73/25,032.70 = 9,963.47/x
  3. Step 3: Cross multiply
    18,139.73x = 25,032.70 × 9,963.47
  4. Step 4: Simplify right side
    18,139.73x = 249,412,574.46
  5. Step 5: Solve for x
    x = 249,412,574.46/18,139.73
  6. Step 6: Final answer
    x = 13,749.52

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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.