Home / 13,164.20-19,746.30-12,559.40

Finding the Fourth Proportional to 13,164.20, 19,746.30 and 12,559.40

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Solution

The fourth proportional to 13,164.20, 19,746.30 and 12,559.40 is: 18,839.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,164.20 : 19,746.30 = 12,559.40 : x
  2. Step 2: Convert to fraction form
    13,164.20/19,746.30 = 12,559.40/x
  3. Step 3: Cross multiply
    13,164.20x = 19,746.30 × 12,559.40
  4. Step 4: Simplify right side
    13,164.20x = 248,001,680.22
  5. Step 5: Solve for x
    x = 248,001,680.22/13,164.20
  6. Step 6: Final answer
    x = 18,839.10

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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.