Home / 21,312.81-29,408.33-12,358.46

Finding the Fourth Proportional to 21,312.81, 29,408.33 and 12,358.46

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Solution

The fourth proportional to 21,312.81, 29,408.33 and 12,358.46 is: 17,052.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312.81 : 29,408.33 = 12,358.46 : x
  2. Step 2: Convert to fraction form
    21,312.81/29,408.33 = 12,358.46/x
  3. Step 3: Cross multiply
    21,312.81x = 29,408.33 × 12,358.46
  4. Step 4: Simplify right side
    21,312.81x = 363,441,774.39
  5. Step 5: Solve for x
    x = 363,441,774.39/21,312.81
  6. Step 6: Final answer
    x = 17,052.74

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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.