Home / 27,765.56-38,314.95-15,189.50

Finding the Fourth Proportional to 27,765.56, 38,314.95 and 15,189.50

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Solution

The fourth proportional to 27,765.56, 38,314.95 and 15,189.50 is: 20,960.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,765.56 : 38,314.95 = 15,189.50 : x
  2. Step 2: Convert to fraction form
    27,765.56/38,314.95 = 15,189.50/x
  3. Step 3: Cross multiply
    27,765.56x = 38,314.95 × 15,189.50
  4. Step 4: Simplify right side
    27,765.56x = 581,984,933.03
  5. Step 5: Solve for x
    x = 581,984,933.03/27,765.56
  6. Step 6: Final answer
    x = 20,960.68

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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.