Home / 21,322.10-29,408.64-15,655.07

Finding the Fourth Proportional to 21,322.10, 29,408.64 and 15,655.07

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Solution

The fourth proportional to 21,322.10, 29,408.64 and 15,655.07 is: 21,592.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,322.10 : 29,408.64 = 15,655.07 : x
  2. Step 2: Convert to fraction form
    21,322.10/29,408.64 = 15,655.07/x
  3. Step 3: Cross multiply
    21,322.10x = 29,408.64 × 15,655.07
  4. Step 4: Simplify right side
    21,322.10x = 460,394,332.62
  5. Step 5: Solve for x
    x = 460,394,332.62/21,322.10
  6. Step 6: Final answer
    x = 21,592.35

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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.