Home / 38,818.57-53,566.68-21,820.11

Finding the Fourth Proportional to 38,818.57, 53,566.68 and 21,820.11

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Solution

The fourth proportional to 38,818.57, 53,566.68 and 21,820.11 is: 30,110.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,818.57 : 53,566.68 = 21,820.11 : x
  2. Step 2: Convert to fraction form
    38,818.57/53,566.68 = 21,820.11/x
  3. Step 3: Cross multiply
    38,818.57x = 53,566.68 × 21,820.11
  4. Step 4: Simplify right side
    38,818.57x = 1,168,830,849.93
  5. Step 5: Solve for x
    x = 1,168,830,849.93/38,818.57
  6. Step 6: Final answer
    x = 30,110.10

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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.