Home / 18,831.88-28,209.55-15,113.98

Finding the Fourth Proportional to 18,831.88, 28,209.55 and 15,113.98

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Solution

The fourth proportional to 18,831.88, 28,209.55 and 15,113.98 is: 22,640.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831.88 : 28,209.55 = 15,113.98 : x
  2. Step 2: Convert to fraction form
    18,831.88/28,209.55 = 15,113.98/x
  3. Step 3: Cross multiply
    18,831.88x = 28,209.55 × 15,113.98
  4. Step 4: Simplify right side
    18,831.88x = 426,358,574.51
  5. Step 5: Solve for x
    x = 426,358,574.51/18,831.88
  6. Step 6: Final answer
    x = 22,640.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.