Home / 21,459.33-29,602.87-12,956.76

Finding the Fourth Proportional to 21,459.33, 29,602.87 and 12,956.76

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Solution

The fourth proportional to 21,459.33, 29,602.87 and 12,956.76 is: 17,873.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,459.33 : 29,602.87 = 12,956.76 : x
  2. Step 2: Convert to fraction form
    21,459.33/29,602.87 = 12,956.76/x
  3. Step 3: Cross multiply
    21,459.33x = 29,602.87 × 12,956.76
  4. Step 4: Simplify right side
    21,459.33x = 383,557,249.51
  5. Step 5: Solve for x
    x = 383,557,249.51/21,459.33
  6. Step 6: Final answer
    x = 17,873.68

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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.