Home / 27,953.81-38,578.98-20,867.93

Finding the Fourth Proportional to 27,953.81, 38,578.98 and 20,867.93

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Solution

The fourth proportional to 27,953.81, 38,578.98 and 20,867.93 is: 28,799.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,953.81 : 38,578.98 = 20,867.93 : x
  2. Step 2: Convert to fraction form
    27,953.81/38,578.98 = 20,867.93/x
  3. Step 3: Cross multiply
    27,953.81x = 38,578.98 × 20,867.93
  4. Step 4: Simplify right side
    27,953.81x = 805,063,261.22
  5. Step 5: Solve for x
    x = 805,063,261.22/27,953.81
  6. Step 6: Final answer
    x = 28,799.77

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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.