Home / 15,436.99-21,297.77-9,770.23

Finding the Fourth Proportional to 15,436.99, 21,297.77 and 9,770.23

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Solution

The fourth proportional to 15,436.99, 21,297.77 and 9,770.23 is: 13,479.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,436.99 : 21,297.77 = 9,770.23 : x
  2. Step 2: Convert to fraction form
    15,436.99/21,297.77 = 9,770.23/x
  3. Step 3: Cross multiply
    15,436.99x = 21,297.77 × 9,770.23
  4. Step 4: Simplify right side
    15,436.99x = 208,084,062.54
  5. Step 5: Solve for x
    x = 208,084,062.54/15,436.99
  6. Step 6: Final answer
    x = 13,479.57

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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.