Home / 38,547.20-53,194.88-21,780.16

Finding the Fourth Proportional to 38,547.20, 53,194.88 and 21,780.16

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Solution

The fourth proportional to 38,547.20, 53,194.88 and 21,780.16 is: 30,056.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,547.20 : 53,194.88 = 21,780.16 : x
  2. Step 2: Convert to fraction form
    38,547.20/53,194.88 = 21,780.16/x
  3. Step 3: Cross multiply
    38,547.20x = 53,194.88 × 21,780.16
  4. Step 4: Simplify right side
    38,547.20x = 1,158,592,997.58
  5. Step 5: Solve for x
    x = 1,158,592,997.58/38,547.20
  6. Step 6: Final answer
    x = 30,056.48

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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.