Home / 21,273.79-29,366.95-15,145.46

Finding the Fourth Proportional to 21,273.79, 29,366.95 and 15,145.46

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Solution

The fourth proportional to 21,273.79, 29,366.95 and 15,145.46 is: 20,907.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,273.79 : 29,366.95 = 15,145.46 : x
  2. Step 2: Convert to fraction form
    21,273.79/29,366.95 = 15,145.46/x
  3. Step 3: Cross multiply
    21,273.79x = 29,366.95 × 15,145.46
  4. Step 4: Simplify right side
    21,273.79x = 444,776,002.10
  5. Step 5: Solve for x
    x = 444,776,002.10/21,273.79
  6. Step 6: Final answer
    x = 20,907.23

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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.