Home / 15,787,397.18-21,786,378.14-8,818,173.90

Finding the Fourth Proportional to 15,787,397.18, 21,786,378.14 and 8,818,173.90

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Solution

The fourth proportional to 15,787,397.18, 21,786,378.14 and 8,818,173.90 is: 12,168,951.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,787,397.18 : 21,786,378.14 = 8,818,173.90 : x
  2. Step 2: Convert to fraction form
    15,787,397.18/21,786,378.14 = 8,818,173.90/x
  3. Step 3: Cross multiply
    15,787,397.18x = 21,786,378.14 × 8,818,173.90
  4. Step 4: Simplify right side
    15,787,397.18x = 192,116,071,089,678.56
  5. Step 5: Solve for x
    x = 192,116,071,089,678.56/15,787,397.18
  6. Step 6: Final answer
    x = 12,168,951.53

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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.