Home / 12,478,611.20-18,689,923.20-10,239,123.20

Finding the Fourth Proportional to 12,478,611.20, 18,689,923.20 and 10,239,123.20

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Solution

The fourth proportional to 12,478,611.20, 18,689,923.20 and 10,239,123.20 is: 15,335,715.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,611.20 : 18,689,923.20 = 10,239,123.20 : x
  2. Step 2: Convert to fraction form
    12,478,611.20/18,689,923.20 = 10,239,123.20/x
  3. Step 3: Cross multiply
    12,478,611.20x = 18,689,923.20 × 10,239,123.20
  4. Step 4: Simplify right side
    12,478,611.20x = 191,368,426,243,338.22
  5. Step 5: Solve for x
    x = 191,368,426,243,338.22/12,478,611.20
  6. Step 6: Final answer
    x = 15,335,715.10

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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.