Home / 35,139.60-48,492.20-20,031.75

Finding the Fourth Proportional to 35,139.60, 48,492.20 and 20,031.75

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Solution

The fourth proportional to 35,139.60, 48,492.20 and 20,031.75 is: 27,643.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,139.60 : 48,492.20 = 20,031.75 : x
  2. Step 2: Convert to fraction form
    35,139.60/48,492.20 = 20,031.75/x
  3. Step 3: Cross multiply
    35,139.60x = 48,492.20 × 20,031.75
  4. Step 4: Simplify right side
    35,139.60x = 971,383,627.35
  5. Step 5: Solve for x
    x = 971,383,627.35/35,139.60
  6. Step 6: Final answer
    x = 27,643.56

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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.