Home / 21,108.63-31,671.68-9,256.28

Finding the Fourth Proportional to 21,108.63, 31,671.68 and 9,256.28

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Solution

The fourth proportional to 21,108.63, 31,671.68 and 9,256.28 is: 13,888.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,108.63 : 31,671.68 = 9,256.28 : x
  2. Step 2: Convert to fraction form
    21,108.63/31,671.68 = 9,256.28/x
  3. Step 3: Cross multiply
    21,108.63x = 31,671.68 × 9,256.28
  4. Step 4: Simplify right side
    21,108.63x = 293,161,733.51
  5. Step 5: Solve for x
    x = 293,161,733.51/21,108.63
  6. Step 6: Final answer
    x = 13,888.24

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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.