Home / 15,384.49-21,230.87-9,015.66

Finding the Fourth Proportional to 15,384.49, 21,230.87 and 9,015.66

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Solution

The fourth proportional to 15,384.49, 21,230.87 and 9,015.66 is: 12,441.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,384.49 : 21,230.87 = 9,015.66 : x
  2. Step 2: Convert to fraction form
    15,384.49/21,230.87 = 9,015.66/x
  3. Step 3: Cross multiply
    15,384.49x = 21,230.87 × 9,015.66
  4. Step 4: Simplify right side
    15,384.49x = 191,410,260.35
  5. Step 5: Solve for x
    x = 191,410,260.35/15,384.49
  6. Step 6: Final answer
    x = 12,441.77

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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.