Home / 16,670.60-23,013.79-12,885.21

Finding the Fourth Proportional to 16,670.60, 23,013.79 and 12,885.21

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Solution

The fourth proportional to 16,670.60, 23,013.79 and 12,885.21 is: 17,788.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,670.60 : 23,013.79 = 12,885.21 : x
  2. Step 2: Convert to fraction form
    16,670.60/23,013.79 = 12,885.21/x
  3. Step 3: Cross multiply
    16,670.60x = 23,013.79 × 12,885.21
  4. Step 4: Simplify right side
    16,670.60x = 296,537,488.71
  5. Step 5: Solve for x
    x = 296,537,488.71/16,670.60
  6. Step 6: Final answer
    x = 17,788.05

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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.