Home / 15,386.96-21,228.29-11,802.56

Finding the Fourth Proportional to 15,386.96, 21,228.29 and 11,802.56

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Solution

The fourth proportional to 15,386.96, 21,228.29 and 11,802.56 is: 16,283.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,386.96 : 21,228.29 = 11,802.56 : x
  2. Step 2: Convert to fraction form
    15,386.96/21,228.29 = 11,802.56/x
  3. Step 3: Cross multiply
    15,386.96x = 21,228.29 × 11,802.56
  4. Step 4: Simplify right side
    15,386.96x = 250,548,001.27
  5. Step 5: Solve for x
    x = 250,548,001.27/15,386.96
  6. Step 6: Final answer
    x = 16,283.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.