Home / 15,429.04-21,292.07-8,355.46

Finding the Fourth Proportional to 15,429.04, 21,292.07 and 8,355.46

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Solution

The fourth proportional to 15,429.04, 21,292.07 and 8,355.46 is: 11,530.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,429.04 : 21,292.07 = 8,355.46 : x
  2. Step 2: Convert to fraction form
    15,429.04/21,292.07 = 8,355.46/x
  3. Step 3: Cross multiply
    15,429.04x = 21,292.07 × 8,355.46
  4. Step 4: Simplify right side
    15,429.04x = 177,905,039.20
  5. Step 5: Solve for x
    x = 177,905,039.20/15,429.04
  6. Step 6: Final answer
    x = 11,530.53

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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.