Home / 15,240.87-21,039.59-11,465.47

Finding the Fourth Proportional to 15,240.87, 21,039.59 and 11,465.47

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Solution

The fourth proportional to 15,240.87, 21,039.59 and 11,465.47 is: 15,827.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,240.87 : 21,039.59 = 11,465.47 : x
  2. Step 2: Convert to fraction form
    15,240.87/21,039.59 = 11,465.47/x
  3. Step 3: Cross multiply
    15,240.87x = 21,039.59 × 11,465.47
  4. Step 4: Simplify right side
    15,240.87x = 241,228,799.92
  5. Step 5: Solve for x
    x = 241,228,799.92/15,240.87
  6. Step 6: Final answer
    x = 15,827.76

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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.