Home / 28,430.93-42,655.83-8,709.68

Finding the Fourth Proportional to 28,430.93, 42,655.83 and 8,709.68

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Solution

The fourth proportional to 28,430.93, 42,655.83 and 8,709.68 is: 13,067.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,430.93 : 42,655.83 = 8,709.68 : x
  2. Step 2: Convert to fraction form
    28,430.93/42,655.83 = 8,709.68/x
  3. Step 3: Cross multiply
    28,430.93x = 42,655.83 × 8,709.68
  4. Step 4: Simplify right side
    28,430.93x = 371,518,629.43
  5. Step 5: Solve for x
    x = 371,518,629.43/28,430.93
  6. Step 6: Final answer
    x = 13,067.41

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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.