Home / 20,637.68-30,946.12-10,108.49

Finding the Fourth Proportional to 20,637.68, 30,946.12 and 10,108.49

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Solution

The fourth proportional to 20,637.68, 30,946.12 and 10,108.49 is: 15,157.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,637.68 : 30,946.12 = 10,108.49 : x
  2. Step 2: Convert to fraction form
    20,637.68/30,946.12 = 10,108.49/x
  3. Step 3: Cross multiply
    20,637.68x = 30,946.12 × 10,108.49
  4. Step 4: Simplify right side
    20,637.68x = 312,818,364.56
  5. Step 5: Solve for x
    x = 312,818,364.56/20,637.68
  6. Step 6: Final answer
    x = 15,157.64

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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.