Home / 21,307.12-29,403.44-12,355.46

Finding the Fourth Proportional to 21,307.12, 29,403.44 and 12,355.46

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Solution

The fourth proportional to 21,307.12, 29,403.44 and 12,355.46 is: 17,050.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307.12 : 29,403.44 = 12,355.46 : x
  2. Step 2: Convert to fraction form
    21,307.12/29,403.44 = 12,355.46/x
  3. Step 3: Cross multiply
    21,307.12x = 29,403.44 × 12,355.46
  4. Step 4: Simplify right side
    21,307.12x = 363,293,026.78
  5. Step 5: Solve for x
    x = 363,293,026.78/21,307.12
  6. Step 6: Final answer
    x = 17,050.31

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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.