Home / 20,455,105.68-28,232,876.88-11,758,323.60

Finding the Fourth Proportional to 20,455,105.68, 28,232,876.88 and 11,758,323.60

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Solution

The fourth proportional to 20,455,105.68, 28,232,876.88 and 11,758,323.60 is: 16,229,263.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,455,105.68 : 28,232,876.88 = 11,758,323.60 : x
  2. Step 2: Convert to fraction form
    20,455,105.68/28,232,876.88 = 11,758,323.60/x
  3. Step 3: Cross multiply
    20,455,105.68x = 28,232,876.88 × 11,758,323.60
  4. Step 4: Simplify right side
    20,455,105.68x = 331,971,302,513,998.38
  5. Step 5: Solve for x
    x = 331,971,302,513,998.38/20,455,105.68
  6. Step 6: Final answer
    x = 16,229,263.62

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1.5x scale

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.