Home / 21,102.50-31,669.31-10,009.22

Finding the Fourth Proportional to 21,102.50, 31,669.31 and 10,009.22

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Solution

The fourth proportional to 21,102.50, 31,669.31 and 10,009.22 is: 15,021.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,102.50 : 31,669.31 = 10,009.22 : x
  2. Step 2: Convert to fraction form
    21,102.50/31,669.31 = 10,009.22/x
  3. Step 3: Cross multiply
    21,102.50x = 31,669.31 × 10,009.22
  4. Step 4: Simplify right side
    21,102.50x = 316,984,957.71
  5. Step 5: Solve for x
    x = 316,984,957.71/21,102.50
  6. Step 6: Final answer
    x = 15,021.20

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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.