Home / 20,265.95-27,966.65-11,315.58

Finding the Fourth Proportional to 20,265.95, 27,966.65 and 11,315.58

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Solution

The fourth proportional to 20,265.95, 27,966.65 and 11,315.58 is: 15,615.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,265.95 : 27,966.65 = 11,315.58 : x
  2. Step 2: Convert to fraction form
    20,265.95/27,966.65 = 11,315.58/x
  3. Step 3: Cross multiply
    20,265.95x = 27,966.65 × 11,315.58
  4. Step 4: Simplify right side
    20,265.95x = 316,458,808.83
  5. Step 5: Solve for x
    x = 316,458,808.83/20,265.95
  6. Step 6: Final answer
    x = 15,615.30

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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.