Home / 28,720,294.14-39,634,005.96-15,667,605.72

Finding the Fourth Proportional to 28,720,294.14, 39,634,005.96 and 15,667,605.72

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Solution

The fourth proportional to 28,720,294.14, 39,634,005.96 and 15,667,605.72 is: 21,621,295.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,720,294.14 : 39,634,005.96 = 15,667,605.72 : x
  2. Step 2: Convert to fraction form
    28,720,294.14/39,634,005.96 = 15,667,605.72/x
  3. Step 3: Cross multiply
    28,720,294.14x = 39,634,005.96 × 15,667,605.72
  4. Step 4: Simplify right side
    28,720,294.14x = 620,969,978,485,410.12
  5. Step 5: Solve for x
    x = 620,969,978,485,410.12/28,720,294.14
  6. Step 6: Final answer
    x = 21,621,295.92

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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.