Home / 28,434.07-42,651.11-7,657.57

Finding the Fourth Proportional to 28,434.07, 42,651.11 and 7,657.57

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Solution

The fourth proportional to 28,434.07, 42,651.11 and 7,657.57 is: 11,486.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,434.07 : 42,651.11 = 7,657.57 : x
  2. Step 2: Convert to fraction form
    28,434.07/42,651.11 = 7,657.57/x
  3. Step 3: Cross multiply
    28,434.07x = 42,651.11 × 7,657.57
  4. Step 4: Simplify right side
    28,434.07x = 326,603,860.40
  5. Step 5: Solve for x
    x = 326,603,860.40/28,434.07
  6. Step 6: Final answer
    x = 11,486.36

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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.