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Finding the Fourth Proportional to 38,482.50, 53,106.67 and 21,254.78

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Solution

The fourth proportional to 38,482.50, 53,106.67 and 21,254.78 is: 29,332.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,482.50 : 53,106.67 = 21,254.78 : x
  2. Step 2: Convert to fraction form
    38,482.50/53,106.67 = 21,254.78/x
  3. Step 3: Cross multiply
    38,482.50x = 53,106.67 × 21,254.78
  4. Step 4: Simplify right side
    38,482.50x = 1,128,770,587.38
  5. Step 5: Solve for x
    x = 1,128,770,587.38/38,482.50
  6. Step 6: Final answer
    x = 29,332.05

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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.