Home / 15,420.16-23,018.64-13,551.84

Finding the Fourth Proportional to 15,420.16, 23,018.64 and 13,551.84

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Solution

The fourth proportional to 15,420.16, 23,018.64 and 13,551.84 is: 20,229.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,420.16 : 23,018.64 = 13,551.84 : x
  2. Step 2: Convert to fraction form
    15,420.16/23,018.64 = 13,551.84/x
  3. Step 3: Cross multiply
    15,420.16x = 23,018.64 × 13,551.84
  4. Step 4: Simplify right side
    15,420.16x = 311,944,926.30
  5. Step 5: Solve for x
    x = 311,944,926.30/15,420.16
  6. Step 6: Final answer
    x = 20,229.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.