Home / 20,254.40-30,381.60-9,886.40

Finding the Fourth Proportional to 20,254.40, 30,381.60 and 9,886.40

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Solution

The fourth proportional to 20,254.40, 30,381.60 and 9,886.40 is: 14,829.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,254.40 : 30,381.60 = 9,886.40 : x
  2. Step 2: Convert to fraction form
    20,254.40/30,381.60 = 9,886.40/x
  3. Step 3: Cross multiply
    20,254.40x = 30,381.60 × 9,886.40
  4. Step 4: Simplify right side
    20,254.40x = 300,364,650.24
  5. Step 5: Solve for x
    x = 300,364,650.24/20,254.40
  6. Step 6: Final answer
    x = 14,829.60

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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.