Home / 27,875.89-38,468.71-15,776.15

Finding the Fourth Proportional to 27,875.89, 38,468.71 and 15,776.15

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Solution

The fourth proportional to 27,875.89, 38,468.71 and 15,776.15 is: 21,771.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,875.89 : 38,468.71 = 15,776.15 : x
  2. Step 2: Convert to fraction form
    27,875.89/38,468.71 = 15,776.15/x
  3. Step 3: Cross multiply
    27,875.89x = 38,468.71 × 15,776.15
  4. Step 4: Simplify right side
    27,875.89x = 606,888,235.44
  5. Step 5: Solve for x
    x = 606,888,235.44/27,875.89
  6. Step 6: Final answer
    x = 21,771.08

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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.