Home / 28,578.24-42,883.56-15,430.32

Finding the Fourth Proportional to 28,578.24, 42,883.56 and 15,430.32

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Solution

The fourth proportional to 28,578.24, 42,883.56 and 15,430.32 is: 23,154.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,578.24 : 42,883.56 = 15,430.32 : x
  2. Step 2: Convert to fraction form
    28,578.24/42,883.56 = 15,430.32/x
  3. Step 3: Cross multiply
    28,578.24x = 42,883.56 × 15,430.32
  4. Step 4: Simplify right side
    28,578.24x = 661,707,053.54
  5. Step 5: Solve for x
    x = 661,707,053.54/28,578.24
  6. Step 6: Final answer
    x = 23,154.23

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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.