Home / 27,885.03-38,480.58-15,309.78

Finding the Fourth Proportional to 27,885.03, 38,480.58 and 15,309.78

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Solution

The fourth proportional to 27,885.03, 38,480.58 and 15,309.78 is: 21,127.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,885.03 : 38,480.58 = 15,309.78 : x
  2. Step 2: Convert to fraction form
    27,885.03/38,480.58 = 15,309.78/x
  3. Step 3: Cross multiply
    27,885.03x = 38,480.58 × 15,309.78
  4. Step 4: Simplify right side
    27,885.03x = 589,129,214.07
  5. Step 5: Solve for x
    x = 589,129,214.07/27,885.03
  6. Step 6: Final answer
    x = 21,127.08

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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.