Home / 30,971.17-42,740.13-16,824.25

Finding the Fourth Proportional to 30,971.17, 42,740.13 and 16,824.25

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Solution

The fourth proportional to 30,971.17, 42,740.13 and 16,824.25 is: 23,217.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,971.17 : 42,740.13 = 16,824.25 : x
  2. Step 2: Convert to fraction form
    30,971.17/42,740.13 = 16,824.25/x
  3. Step 3: Cross multiply
    30,971.17x = 42,740.13 × 16,824.25
  4. Step 4: Simplify right side
    30,971.17x = 719,070,632.15
  5. Step 5: Solve for x
    x = 719,070,632.15/30,971.17
  6. Step 6: Final answer
    x = 23,217.42

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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.