Home / 19,708.63-27,223.02-15,143.61

Finding the Fourth Proportional to 19,708.63, 27,223.02 and 15,143.61

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Solution

The fourth proportional to 19,708.63, 27,223.02 and 15,143.61 is: 20,917.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,708.63 : 27,223.02 = 15,143.61 : x
  2. Step 2: Convert to fraction form
    19,708.63/27,223.02 = 15,143.61/x
  3. Step 3: Cross multiply
    19,708.63x = 27,223.02 × 15,143.61
  4. Step 4: Simplify right side
    19,708.63x = 412,254,810.75
  5. Step 5: Solve for x
    x = 412,254,810.75/19,708.63
  6. Step 6: Final answer
    x = 20,917.48

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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.