Home / 20,906.08-31,342.68-14,312.28

Finding the Fourth Proportional to 20,906.08, 31,342.68 and 14,312.28

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Solution

The fourth proportional to 20,906.08, 31,342.68 and 14,312.28 is: 21,457.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,906.08 : 31,342.68 = 14,312.28 : x
  2. Step 2: Convert to fraction form
    20,906.08/31,342.68 = 14,312.28/x
  3. Step 3: Cross multiply
    20,906.08x = 31,342.68 × 14,312.28
  4. Step 4: Simplify right side
    20,906.08x = 448,585,212.11
  5. Step 5: Solve for x
    x = 448,585,212.11/20,906.08
  6. Step 6: Final answer
    x = 21,457.17

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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.