Home / 15,465.74-21,344.18-9,415.49

Finding the Fourth Proportional to 15,465.74, 21,344.18 and 9,415.49

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Solution

The fourth proportional to 15,465.74, 21,344.18 and 9,415.49 is: 12,994.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,465.74 : 21,344.18 = 9,415.49 : x
  2. Step 2: Convert to fraction form
    15,465.74/21,344.18 = 9,415.49/x
  3. Step 3: Cross multiply
    15,465.74x = 21,344.18 × 9,415.49
  4. Step 4: Simplify right side
    15,465.74x = 200,965,759.55
  5. Step 5: Solve for x
    x = 200,965,759.55/15,465.74
  6. Step 6: Final answer
    x = 12,994.26

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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.