Home / 15,513.60-21,419.02-11,922.14

Finding the Fourth Proportional to 15,513.60, 21,419.02 and 11,922.14

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Solution

The fourth proportional to 15,513.60, 21,419.02 and 11,922.14 is: 16,460.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,513.60 : 21,419.02 = 11,922.14 : x
  2. Step 2: Convert to fraction form
    15,513.60/21,419.02 = 11,922.14/x
  3. Step 3: Cross multiply
    15,513.60x = 21,419.02 × 11,922.14
  4. Step 4: Simplify right side
    15,513.60x = 255,360,555.10
  5. Step 5: Solve for x
    x = 255,360,555.10/15,513.60
  6. Step 6: Final answer
    x = 16,460.43

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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.