Home / 38,281.70-52,831.56-21,289

Finding the Fourth Proportional to 38,281.70, 52,831.56 and 21,289

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Solution

The fourth proportional to 38,281.70, 52,831.56 and 21,289 is: 29,380.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,281.70 : 52,831.56 = 21,289 : x
  2. Step 2: Convert to fraction form
    38,281.70/52,831.56 = 21,289/x
  3. Step 3: Cross multiply
    38,281.70x = 52,831.56 × 21,289
  4. Step 4: Simplify right side
    38,281.70x = 1,124,731,080.84
  5. Step 5: Solve for x
    x = 1,124,731,080.84/38,281.70
  6. Step 6: Final answer
    x = 29,380.38

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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.