Home / 12,478,994.46-18,706,091.40-8,684,505.72

Finding the Fourth Proportional to 12,478,994.46, 18,706,091.40 and 8,684,505.72

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Solution

The fourth proportional to 12,478,994.46, 18,706,091.40 and 8,684,505.72 is: 13,018,128.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,994.46 : 18,706,091.40 = 8,684,505.72 : x
  2. Step 2: Convert to fraction form
    12,478,994.46/18,706,091.40 = 8,684,505.72/x
  3. Step 3: Cross multiply
    12,478,994.46x = 18,706,091.40 × 8,684,505.72
  4. Step 4: Simplify right side
    12,478,994.46x = 162,453,157,762,142.81
  5. Step 5: Solve for x
    x = 162,453,157,762,142.81/12,478,994.46
  6. Step 6: Final answer
    x = 13,018,128.85

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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.