Home / 15,051,920.17-20,772,220.80-8,436,630.90

Finding the Fourth Proportional to 15,051,920.17, 20,772,220.80 and 8,436,630.90

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Solution

The fourth proportional to 15,051,920.17, 20,772,220.80 and 8,436,630.90 is: 11,642,870.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,051,920.17 : 20,772,220.80 = 8,436,630.90 : x
  2. Step 2: Convert to fraction form
    15,051,920.17/20,772,220.80 = 8,436,630.90/x
  3. Step 3: Cross multiply
    15,051,920.17x = 20,772,220.80 × 8,436,630.90
  4. Step 4: Simplify right side
    15,051,920.17x = 175,247,559,862,902.72
  5. Step 5: Solve for x
    x = 175,247,559,862,902.72/15,051,920.17
  6. Step 6: Final answer
    x = 11,642,870.67

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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.