Home / 21,129.18-29,157.16-11,567.23

Finding the Fourth Proportional to 21,129.18, 29,157.16 and 11,567.23

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Solution

The fourth proportional to 21,129.18, 29,157.16 and 11,567.23 is: 15,962.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,129.18 : 29,157.16 = 11,567.23 : x
  2. Step 2: Convert to fraction form
    21,129.18/29,157.16 = 11,567.23/x
  3. Step 3: Cross multiply
    21,129.18x = 29,157.16 × 11,567.23
  4. Step 4: Simplify right side
    21,129.18x = 337,267,575.87
  5. Step 5: Solve for x
    x = 337,267,575.87/21,129.18
  6. Step 6: Final answer
    x = 15,962.17

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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.