Home / 12,113,442.72-18,114,912-9,041,611.68

Finding the Fourth Proportional to 12,113,442.72, 18,114,912 and 9,041,611.68

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Solution

The fourth proportional to 12,113,442.72, 18,114,912 and 9,041,611.68 is: 13,521,176.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,113,442.72 : 18,114,912 = 9,041,611.68 : x
  2. Step 2: Convert to fraction form
    12,113,442.72/18,114,912 = 9,041,611.68/x
  3. Step 3: Cross multiply
    12,113,442.72x = 18,114,912 × 9,041,611.68
  4. Step 4: Simplify right side
    12,113,442.72x = 163,787,999,921,372.16
  5. Step 5: Solve for x
    x = 163,787,999,921,372.16/12,113,442.72
  6. Step 6: Final answer
    x = 13,521,176.74

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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.