Home / 15,150.87-20,907.99-8,436.51

Finding the Fourth Proportional to 15,150.87, 20,907.99 and 8,436.51

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Solution

The fourth proportional to 15,150.87, 20,907.99 and 8,436.51 is: 11,642.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,150.87 : 20,907.99 = 8,436.51 : x
  2. Step 2: Convert to fraction form
    15,150.87/20,907.99 = 8,436.51/x
  3. Step 3: Cross multiply
    15,150.87x = 20,907.99 × 8,436.51
  4. Step 4: Simplify right side
    15,150.87x = 176,390,466.71
  5. Step 5: Solve for x
    x = 176,390,466.71/15,150.87
  6. Step 6: Final answer
    x = 11,642.27

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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.