Home / 38,985.06-53,788.14-21,988.44

Finding the Fourth Proportional to 38,985.06, 53,788.14 and 21,988.44

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Solution

The fourth proportional to 38,985.06, 53,788.14 and 21,988.44 is: 30,337.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,985.06 : 53,788.14 = 21,988.44 : x
  2. Step 2: Convert to fraction form
    38,985.06/53,788.14 = 21,988.44/x
  3. Step 3: Cross multiply
    38,985.06x = 53,788.14 × 21,988.44
  4. Step 4: Simplify right side
    38,985.06x = 1,182,717,289.10
  5. Step 5: Solve for x
    x = 1,182,717,289.10/38,985.06
  6. Step 6: Final answer
    x = 30,337.71

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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.