Home / 30,915.04-42,662.64-16,767.04

Finding the Fourth Proportional to 30,915.04, 42,662.64 and 16,767.04

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Solution

The fourth proportional to 30,915.04, 42,662.64 and 16,767.04 is: 23,138.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,915.04 : 42,662.64 = 16,767.04 : x
  2. Step 2: Convert to fraction form
    30,915.04/42,662.64 = 16,767.04/x
  3. Step 3: Cross multiply
    30,915.04x = 42,662.64 × 16,767.04
  4. Step 4: Simplify right side
    30,915.04x = 715,326,191.39
  5. Step 5: Solve for x
    x = 715,326,191.39/30,915.04
  6. Step 6: Final answer
    x = 23,138.45

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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.