Home / 28,215.11-38,937.30-16,885.09

Finding the Fourth Proportional to 28,215.11, 38,937.30 and 16,885.09

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Solution

The fourth proportional to 28,215.11, 38,937.30 and 16,885.09 is: 23,301.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,215.11 : 38,937.30 = 16,885.09 : x
  2. Step 2: Convert to fraction form
    28,215.11/38,937.30 = 16,885.09/x
  3. Step 3: Cross multiply
    28,215.11x = 38,937.30 × 16,885.09
  4. Step 4: Simplify right side
    28,215.11x = 657,459,717.51
  5. Step 5: Solve for x
    x = 657,459,717.51/28,215.11
  6. Step 6: Final answer
    x = 23,301.69

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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.