Home / 21,308.81-29,424.74-13,364.73

Finding the Fourth Proportional to 21,308.81, 29,424.74 and 13,364.73

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Solution

The fourth proportional to 21,308.81, 29,424.74 and 13,364.73 is: 18,454.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,308.81 : 29,424.74 = 13,364.73 : x
  2. Step 2: Convert to fraction form
    21,308.81/29,424.74 = 13,364.73/x
  3. Step 3: Cross multiply
    21,308.81x = 29,424.74 × 13,364.73
  4. Step 4: Simplify right side
    21,308.81x = 393,253,638.60
  5. Step 5: Solve for x
    x = 393,253,638.60/21,308.81
  6. Step 6: Final answer
    x = 18,454.98

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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.