Home / 21,061.36-31,581.48-7,016.46

Finding the Fourth Proportional to 21,061.36, 31,581.48 and 7,016.46

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Solution

The fourth proportional to 21,061.36, 31,581.48 and 7,016.46 is: 10,521.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,061.36 : 31,581.48 = 7,016.46 : x
  2. Step 2: Convert to fraction form
    21,061.36/31,581.48 = 7,016.46/x
  3. Step 3: Cross multiply
    21,061.36x = 31,581.48 × 7,016.46
  4. Step 4: Simplify right side
    21,061.36x = 221,590,191.16
  5. Step 5: Solve for x
    x = 221,590,191.16/21,061.36
  6. Step 6: Final answer
    x = 10,521.17

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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.