Home / 38,689.32-53,388.54-21,692.28

Finding the Fourth Proportional to 38,689.32, 53,388.54 and 21,692.28

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Solution

The fourth proportional to 38,689.32, 53,388.54 and 21,692.28 is: 29,933.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,689.32 : 53,388.54 = 21,692.28 : x
  2. Step 2: Convert to fraction form
    38,689.32/53,388.54 = 21,692.28/x
  3. Step 3: Cross multiply
    38,689.32x = 53,388.54 × 21,692.28
  4. Step 4: Simplify right side
    38,689.32x = 1,158,119,158.47
  5. Step 5: Solve for x
    x = 1,158,119,158.47/38,689.32
  6. Step 6: Final answer
    x = 29,933.82

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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.