Home / 20,969.16-31,468.32-14,401.68

Finding the Fourth Proportional to 20,969.16, 31,468.32 and 14,401.68

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Solution

The fourth proportional to 20,969.16, 31,468.32 and 14,401.68 is: 21,612.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,969.16 : 31,468.32 = 14,401.68 : x
  2. Step 2: Convert to fraction form
    20,969.16/31,468.32 = 14,401.68/x
  3. Step 3: Cross multiply
    20,969.16x = 31,468.32 × 14,401.68
  4. Step 4: Simplify right side
    20,969.16x = 453,196,674.78
  5. Step 5: Solve for x
    x = 453,196,674.78/20,969.16
  6. Step 6: Final answer
    x = 21,612.53

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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.