Home / 18,926,245-28,448,627.10-12,490,675.12

Finding the Fourth Proportional to 18,926,245, 28,448,627.10 and 12,490,675.12

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Solution

The fourth proportional to 18,926,245, 28,448,627.10 and 12,490,675.12 is: 18,775,121.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,926,245 : 28,448,627.10 = 12,490,675.12 : x
  2. Step 2: Convert to fraction form
    18,926,245/28,448,627.10 = 12,490,675.12/x
  3. Step 3: Cross multiply
    18,926,245x = 28,448,627.10 × 12,490,675.12
  4. Step 4: Simplify right side
    18,926,245x = 355,342,558,716,127.75
  5. Step 5: Solve for x
    x = 355,342,558,716,127.75/18,926,245
  6. Step 6: Final answer
    x = 18,775,121.99

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Double scale
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1.5x scale

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.