Home / 28,720,300.12-39,634,014.24-15,667,611.68

Finding the Fourth Proportional to 28,720,300.12, 39,634,014.24 and 15,667,611.68

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Solution

The fourth proportional to 28,720,300.12, 39,634,014.24 and 15,667,611.68 is: 21,621,304.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,720,300.12 : 39,634,014.24 = 15,667,611.68 : x
  2. Step 2: Convert to fraction form
    28,720,300.12/39,634,014.24 = 15,667,611.68/x
  3. Step 3: Cross multiply
    28,720,300.12x = 39,634,014.24 × 15,667,611.68
  4. Step 4: Simplify right side
    28,720,300.12x = 620,970,344,431,910.38
  5. Step 5: Solve for x
    x = 620,970,344,431,910.38/28,720,300.12
  6. Step 6: Final answer
    x = 21,621,304.16

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Double scale
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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.