Home / 27,355.74-37,750.50-15,420.21

Finding the Fourth Proportional to 27,355.74, 37,750.50 and 15,420.21

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Solution

The fourth proportional to 27,355.74, 37,750.50 and 15,420.21 is: 21,279.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,355.74 : 37,750.50 = 15,420.21 : x
  2. Step 2: Convert to fraction form
    27,355.74/37,750.50 = 15,420.21/x
  3. Step 3: Cross multiply
    27,355.74x = 37,750.50 × 15,420.21
  4. Step 4: Simplify right side
    27,355.74x = 582,120,637.61
  5. Step 5: Solve for x
    x = 582,120,637.61/27,355.74
  6. Step 6: Final answer
    x = 21,279.65

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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.