Home / 21,113.04-31,680.50-15,317.49

Finding the Fourth Proportional to 21,113.04, 31,680.50 and 15,317.49

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Solution

The fourth proportional to 21,113.04, 31,680.50 and 15,317.49 is: 22,984.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,113.04 : 31,680.50 = 15,317.49 : x
  2. Step 2: Convert to fraction form
    21,113.04/31,680.50 = 15,317.49/x
  3. Step 3: Cross multiply
    21,113.04x = 31,680.50 × 15,317.49
  4. Step 4: Simplify right side
    21,113.04x = 485,265,665.36
  5. Step 5: Solve for x
    x = 485,265,665.36/21,113.04
  6. Step 6: Final answer
    x = 22,984.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.