Home / 27,278.76-37,648.28-20,225.28

Finding the Fourth Proportional to 27,278.76, 37,648.28 and 20,225.28

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Solution

The fourth proportional to 27,278.76, 37,648.28 and 20,225.28 is: 27,913.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,278.76 : 37,648.28 = 20,225.28 : x
  2. Step 2: Convert to fraction form
    27,278.76/37,648.28 = 20,225.28/x
  3. Step 3: Cross multiply
    27,278.76x = 37,648.28 × 20,225.28
  4. Step 4: Simplify right side
    27,278.76x = 761,447,004.52
  5. Step 5: Solve for x
    x = 761,447,004.52/27,278.76
  6. Step 6: Final answer
    x = 27,913.55

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Half scale
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Double scale
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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.