Home / 30,569.47-42,193.37-18,639.38

Finding the Fourth Proportional to 30,569.47, 42,193.37 and 18,639.38

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Solution

The fourth proportional to 30,569.47, 42,193.37 and 18,639.38 is: 25,726.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,569.47 : 42,193.37 = 18,639.38 : x
  2. Step 2: Convert to fraction form
    30,569.47/42,193.37 = 18,639.38/x
  3. Step 3: Cross multiply
    30,569.47x = 42,193.37 × 18,639.38
  4. Step 4: Simplify right side
    30,569.47x = 786,458,163.71
  5. Step 5: Solve for x
    x = 786,458,163.71/30,569.47
  6. Step 6: Final answer
    x = 25,726.92

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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.