Home / 27,686.90-38,208.77-15,751.95

Finding the Fourth Proportional to 27,686.90, 38,208.77 and 15,751.95

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Solution

The fourth proportional to 27,686.90, 38,208.77 and 15,751.95 is: 21,738.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,686.90 : 38,208.77 = 15,751.95 : x
  2. Step 2: Convert to fraction form
    27,686.90/38,208.77 = 15,751.95/x
  3. Step 3: Cross multiply
    27,686.90x = 38,208.77 × 15,751.95
  4. Step 4: Simplify right side
    27,686.90x = 601,862,555.84
  5. Step 5: Solve for x
    x = 601,862,555.84/27,686.90
  6. Step 6: Final answer
    x = 21,738.17

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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.