Home / 30,669.80-42,316.29-17,915.54

Finding the Fourth Proportional to 30,669.80, 42,316.29 and 17,915.54

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Solution

The fourth proportional to 30,669.80, 42,316.29 and 17,915.54 is: 24,718.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,669.80 : 42,316.29 = 17,915.54 : x
  2. Step 2: Convert to fraction form
    30,669.80/42,316.29 = 17,915.54/x
  3. Step 3: Cross multiply
    30,669.80x = 42,316.29 × 17,915.54
  4. Step 4: Simplify right side
    30,669.80x = 758,118,974.57
  5. Step 5: Solve for x
    x = 758,118,974.57/30,669.80
  6. Step 6: Final answer
    x = 24,718.75

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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.