Home / 30,911.84-42,657.56-17,113.76

Finding the Fourth Proportional to 30,911.84, 42,657.56 and 17,113.76

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Solution

The fourth proportional to 30,911.84, 42,657.56 and 17,113.76 is: 23,616.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,911.84 : 42,657.56 = 17,113.76 : x
  2. Step 2: Convert to fraction form
    30,911.84/42,657.56 = 17,113.76/x
  3. Step 3: Cross multiply
    30,911.84x = 42,657.56 × 17,113.76
  4. Step 4: Simplify right side
    30,911.84x = 730,031,244.03
  5. Step 5: Solve for x
    x = 730,031,244.03/30,911.84
  6. Step 6: Final answer
    x = 23,616.56

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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.