Home / 21,354.24-29,465.28-12,403.20

Finding the Fourth Proportional to 21,354.24, 29,465.28 and 12,403.20

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Solution

The fourth proportional to 21,354.24, 29,465.28 and 12,403.20 is: 17,114.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,354.24 : 29,465.28 = 12,403.20 : x
  2. Step 2: Convert to fraction form
    21,354.24/29,465.28 = 12,403.20/x
  3. Step 3: Cross multiply
    21,354.24x = 29,465.28 × 12,403.20
  4. Step 4: Simplify right side
    21,354.24x = 365,463,760.90
  5. Step 5: Solve for x
    x = 365,463,760.90/21,354.24
  6. Step 6: Final answer
    x = 17,114.34

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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.