Home / 38,671.46-53,370.36-21,678.59

Finding the Fourth Proportional to 38,671.46, 53,370.36 and 21,678.59

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Solution

The fourth proportional to 38,671.46, 53,370.36 and 21,678.59 is: 29,918.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,671.46 : 53,370.36 = 21,678.59 : x
  2. Step 2: Convert to fraction form
    38,671.46/53,370.36 = 21,678.59/x
  3. Step 3: Cross multiply
    38,671.46x = 53,370.36 × 21,678.59
  4. Step 4: Simplify right side
    38,671.46x = 1,156,994,152.59
  5. Step 5: Solve for x
    x = 1,156,994,152.59/38,671.46
  6. Step 6: Final answer
    x = 29,918.55

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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.