Home / 15,522.42-21,415.39-10,419.19

Finding the Fourth Proportional to 15,522.42, 21,415.39 and 10,419.19

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Solution

The fourth proportional to 15,522.42, 21,415.39 and 10,419.19 is: 14,374.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,522.42 : 21,415.39 = 10,419.19 : x
  2. Step 2: Convert to fraction form
    15,522.42/21,415.39 = 10,419.19/x
  3. Step 3: Cross multiply
    15,522.42x = 21,415.39 × 10,419.19
  4. Step 4: Simplify right side
    15,522.42x = 223,130,858.16
  5. Step 5: Solve for x
    x = 223,130,858.16/15,522.42
  6. Step 6: Final answer
    x = 14,374.75

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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.