Home / 15,325.60-21,167.13-12,270.10

Finding the Fourth Proportional to 15,325.60, 21,167.13 and 12,270.10

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Solution

The fourth proportional to 15,325.60, 21,167.13 and 12,270.10 is: 16,946.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,325.60 : 21,167.13 = 12,270.10 : x
  2. Step 2: Convert to fraction form
    15,325.60/21,167.13 = 12,270.10/x
  3. Step 3: Cross multiply
    15,325.60x = 21,167.13 × 12,270.10
  4. Step 4: Simplify right side
    15,325.60x = 259,722,801.81
  5. Step 5: Solve for x
    x = 259,722,801.81/15,325.60
  6. Step 6: Final answer
    x = 16,946.99

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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.