Home / 27,840.16-38,419.84-15,264.80

Finding the Fourth Proportional to 27,840.16, 38,419.84 and 15,264.80

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Solution

The fourth proportional to 27,840.16, 38,419.84 and 15,264.80 is: 21,065.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,840.16 : 38,419.84 = 15,264.80 : x
  2. Step 2: Convert to fraction form
    27,840.16/38,419.84 = 15,264.80/x
  3. Step 3: Cross multiply
    27,840.16x = 38,419.84 × 15,264.80
  4. Step 4: Simplify right side
    27,840.16x = 586,471,173.63
  5. Step 5: Solve for x
    x = 586,471,173.63/27,840.16
  6. Step 6: Final answer
    x = 21,065.65

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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.