Home / 38,712.32-53,432.88-21,955.04

Finding the Fourth Proportional to 38,712.32, 53,432.88 and 21,955.04

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Solution

The fourth proportional to 38,712.32, 53,432.88 and 21,955.04 is: 30,303.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,712.32 : 53,432.88 = 21,955.04 : x
  2. Step 2: Convert to fraction form
    38,712.32/53,432.88 = 21,955.04/x
  3. Step 3: Cross multiply
    38,712.32x = 53,432.88 × 21,955.04
  4. Step 4: Simplify right side
    38,712.32x = 1,173,121,017.72
  5. Step 5: Solve for x
    x = 1,173,121,017.72/38,712.32
  6. Step 6: Final answer
    x = 30,303.56

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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.