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Finding the Fourth Proportional to 27,271.60, 40,810.20 and 18,912.40

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Solution

The fourth proportional to 27,271.60, 40,810.20 and 18,912.40 is: 28,301.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,271.60 : 40,810.20 = 18,912.40 : x
  2. Step 2: Convert to fraction form
    27,271.60/40,810.20 = 18,912.40/x
  3. Step 3: Cross multiply
    27,271.60x = 40,810.20 × 18,912.40
  4. Step 4: Simplify right side
    27,271.60x = 771,818,826.48
  5. Step 5: Solve for x
    x = 771,818,826.48/27,271.60
  6. Step 6: Final answer
    x = 28,301.19

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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.