Home / 30,971.32-42,740.40-16,824.48

Finding the Fourth Proportional to 30,971.32, 42,740.40 and 16,824.48

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Solution

The fourth proportional to 30,971.32, 42,740.40 and 16,824.48 is: 23,217.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,971.32 : 42,740.40 = 16,824.48 : x
  2. Step 2: Convert to fraction form
    30,971.32/42,740.40 = 16,824.48/x
  3. Step 3: Cross multiply
    30,971.32x = 42,740.40 × 16,824.48
  4. Step 4: Simplify right side
    30,971.32x = 719,085,004.99
  5. Step 5: Solve for x
    x = 719,085,004.99/30,971.32
  6. Step 6: Final answer
    x = 23,217.77

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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.