Home / 21,308.46-29,386.58-13,351.56

Finding the Fourth Proportional to 21,308.46, 29,386.58 and 13,351.56

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Solution

The fourth proportional to 21,308.46, 29,386.58 and 13,351.56 is: 18,413.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,308.46 : 29,386.58 = 13,351.56 : x
  2. Step 2: Convert to fraction form
    21,308.46/29,386.58 = 13,351.56/x
  3. Step 3: Cross multiply
    21,308.46x = 29,386.58 × 13,351.56
  4. Step 4: Simplify right side
    21,308.46x = 392,356,686.06
  5. Step 5: Solve for x
    x = 392,356,686.06/21,308.46
  6. Step 6: Final answer
    x = 18,413.19

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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.