Home / 20,070.56-27,716.13-12,912.93

Finding the Fourth Proportional to 20,070.56, 27,716.13 and 12,912.93

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Solution

The fourth proportional to 20,070.56, 27,716.13 and 12,912.93 is: 17,831.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070.56 : 27,716.13 = 12,912.93 : x
  2. Step 2: Convert to fraction form
    20,070.56/27,716.13 = 12,912.93/x
  3. Step 3: Cross multiply
    20,070.56x = 27,716.13 × 12,912.93
  4. Step 4: Simplify right side
    20,070.56x = 357,896,446.56
  5. Step 5: Solve for x
    x = 357,896,446.56/20,070.56
  6. Step 6: Final answer
    x = 17,831.91

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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.