Home / 20,887.29-31,339.14-9,192.31

Finding the Fourth Proportional to 20,887.29, 31,339.14 and 9,192.31

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Solution

The fourth proportional to 20,887.29, 31,339.14 and 9,192.31 is: 13,792.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,887.29 : 31,339.14 = 9,192.31 : x
  2. Step 2: Convert to fraction form
    20,887.29/31,339.14 = 9,192.31/x
  3. Step 3: Cross multiply
    20,887.29x = 31,339.14 × 9,192.31
  4. Step 4: Simplify right side
    20,887.29x = 288,079,090.01
  5. Step 5: Solve for x
    x = 288,079,090.01/20,887.29
  6. Step 6: Final answer
    x = 13,792.08

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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.