Home / 19,091.16-28,765.47-15,831.72

Finding the Fourth Proportional to 19,091.16, 28,765.47 and 15,831.72

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Solution

The fourth proportional to 19,091.16, 28,765.47 and 15,831.72 is: 23,854.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,091.16 : 28,765.47 = 15,831.72 : x
  2. Step 2: Convert to fraction form
    19,091.16/28,765.47 = 15,831.72/x
  3. Step 3: Cross multiply
    19,091.16x = 28,765.47 × 15,831.72
  4. Step 4: Simplify right side
    19,091.16x = 455,406,866.71
  5. Step 5: Solve for x
    x = 455,406,866.71/19,091.16
  6. Step 6: Final answer
    x = 23,854.33

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.