Home / 21,201.51-31,802.29-9,352.78

Finding the Fourth Proportional to 21,201.51, 31,802.29 and 9,352.78

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Solution

The fourth proportional to 21,201.51, 31,802.29 and 9,352.78 is: 14,029.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,201.51 : 31,802.29 = 9,352.78 : x
  2. Step 2: Convert to fraction form
    21,201.51/31,802.29 = 9,352.78/x
  3. Step 3: Cross multiply
    21,201.51x = 31,802.29 × 9,352.78
  4. Step 4: Simplify right side
    21,201.51x = 297,439,718.98
  5. Step 5: Solve for x
    x = 297,439,718.98/21,201.51
  6. Step 6: Final answer
    x = 14,029.17

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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.