Home / 38,479.04-53,099.56-21,712.08

Finding the Fourth Proportional to 38,479.04, 53,099.56 and 21,712.08

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Solution

The fourth proportional to 38,479.04, 53,099.56 and 21,712.08 is: 29,961.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,479.04 : 53,099.56 = 21,712.08 : x
  2. Step 2: Convert to fraction form
    38,479.04/53,099.56 = 21,712.08/x
  3. Step 3: Cross multiply
    38,479.04x = 53,099.56 × 21,712.08
  4. Step 4: Simplify right side
    38,479.04x = 1,152,901,894.68
  5. Step 5: Solve for x
    x = 1,152,901,894.68/38,479.04
  6. Step 6: Final answer
    x = 29,961.82

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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.