Home / 21,346.14-29,447.36-13,385.46

Finding the Fourth Proportional to 21,346.14, 29,447.36 and 13,385.46

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Solution

The fourth proportional to 21,346.14, 29,447.36 and 13,385.46 is: 18,465.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,346.14 : 29,447.36 = 13,385.46 : x
  2. Step 2: Convert to fraction form
    21,346.14/29,447.36 = 13,385.46/x
  3. Step 3: Cross multiply
    21,346.14x = 29,447.36 × 13,385.46
  4. Step 4: Simplify right side
    21,346.14x = 394,166,459.39
  5. Step 5: Solve for x
    x = 394,166,459.39/21,346.14
  6. Step 6: Final answer
    x = 18,465.47

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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.