Home / 18,716,534.84-28,078,119.20-8,480,981.16

Finding the Fourth Proportional to 18,716,534.84, 28,078,119.20 and 8,480,981.16

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Solution

The fourth proportional to 18,716,534.84, 28,078,119.20 and 8,480,981.16 is: 12,722,974.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,716,534.84 : 28,078,119.20 = 8,480,981.16 : x
  2. Step 2: Convert to fraction form
    18,716,534.84/28,078,119.20 = 8,480,981.16/x
  3. Step 3: Cross multiply
    18,716,534.84x = 28,078,119.20 × 8,480,981.16
  4. Step 4: Simplify right side
    18,716,534.84x = 238,129,999,943,434.28
  5. Step 5: Solve for x
    x = 238,129,999,943,434.28/18,716,534.84
  6. Step 6: Final answer
    x = 12,722,974.74

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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.