Home / 27,888.89-38,486.18-15,313.55

Finding the Fourth Proportional to 27,888.89, 38,486.18 and 15,313.55

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Solution

The fourth proportional to 27,888.89, 38,486.18 and 15,313.55 is: 21,132.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,888.89 : 38,486.18 = 15,313.55 : x
  2. Step 2: Convert to fraction form
    27,888.89/38,486.18 = 15,313.55/x
  3. Step 3: Cross multiply
    27,888.89x = 38,486.18 × 15,313.55
  4. Step 4: Simplify right side
    27,888.89x = 589,359,887.59
  5. Step 5: Solve for x
    x = 589,359,887.59/27,888.89
  6. Step 6: Final answer
    x = 21,132.43

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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.