Home / 20,275.60-30,416.76-7,124.56

Finding the Fourth Proportional to 20,275.60, 30,416.76 and 7,124.56

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Solution

The fourth proportional to 20,275.60, 30,416.76 and 7,124.56 is: 10,688.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,275.60 : 30,416.76 = 7,124.56 : x
  2. Step 2: Convert to fraction form
    20,275.60/30,416.76 = 7,124.56/x
  3. Step 3: Cross multiply
    20,275.60x = 30,416.76 × 7,124.56
  4. Step 4: Simplify right side
    20,275.60x = 216,706,031.63
  5. Step 5: Solve for x
    x = 216,706,031.63/20,275.60
  6. Step 6: Final answer
    x = 10,688.02

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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.