Home / 28,306.48-39,055.80-18,868.72

Finding the Fourth Proportional to 28,306.48, 39,055.80 and 18,868.72

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Solution

The fourth proportional to 28,306.48, 39,055.80 and 18,868.72 is: 26,034.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,306.48 : 39,055.80 = 18,868.72 : x
  2. Step 2: Convert to fraction form
    28,306.48/39,055.80 = 18,868.72/x
  3. Step 3: Cross multiply
    28,306.48x = 39,055.80 × 18,868.72
  4. Step 4: Simplify right side
    28,306.48x = 736,932,954.58
  5. Step 5: Solve for x
    x = 736,932,954.58/28,306.48
  6. Step 6: Final answer
    x = 26,034.07

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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.