Home / 18,718,831.69-28,206,017.32-15,381,870.05

Finding the Fourth Proportional to 18,718,831.69, 28,206,017.32 and 15,381,870.05

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Solution

The fourth proportional to 18,718,831.69, 28,206,017.32 and 15,381,870.05 is: 23,177,797.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718,831.69 : 28,206,017.32 = 15,381,870.05 : x
  2. Step 2: Convert to fraction form
    18,718,831.69/28,206,017.32 = 15,381,870.05/x
  3. Step 3: Cross multiply
    18,718,831.69x = 28,206,017.32 × 15,381,870.05
  4. Step 4: Simplify right side
    18,718,831.69x = 433,861,293,076,349.62
  5. Step 5: Solve for x
    x = 433,861,293,076,349.62/18,718,831.69
  6. Step 6: Final answer
    x = 23,177,797.65

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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.