Home / 38,638.14-53,320.01-21,642.34

Finding the Fourth Proportional to 38,638.14, 53,320.01 and 21,642.34

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Solution

The fourth proportional to 38,638.14, 53,320.01 and 21,642.34 is: 29,866.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,638.14 : 53,320.01 = 21,642.34 : x
  2. Step 2: Convert to fraction form
    38,638.14/53,320.01 = 21,642.34/x
  3. Step 3: Cross multiply
    38,638.14x = 53,320.01 × 21,642.34
  4. Step 4: Simplify right side
    38,638.14x = 1,153,969,959.93
  5. Step 5: Solve for x
    x = 1,153,969,959.93/38,638.14
  6. Step 6: Final answer
    x = 29,866.08

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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.