Home / 12,558.60-18,837.90-11,291.40

Finding the Fourth Proportional to 12,558.60, 18,837.90 and 11,291.40

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Solution

The fourth proportional to 12,558.60, 18,837.90 and 11,291.40 is: 16,937.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,558.60 : 18,837.90 = 11,291.40 : x
  2. Step 2: Convert to fraction form
    12,558.60/18,837.90 = 11,291.40/x
  3. Step 3: Cross multiply
    12,558.60x = 18,837.90 × 11,291.40
  4. Step 4: Simplify right side
    12,558.60x = 212,706,264.06
  5. Step 5: Solve for x
    x = 212,706,264.06/12,558.60
  6. Step 6: Final answer
    x = 16,937.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.