Home / 28,303.02-42,344.78-20,423.68

Finding the Fourth Proportional to 28,303.02, 42,344.78 and 20,423.68

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Solution

The fourth proportional to 28,303.02, 42,344.78 and 20,423.68 is: 30,556.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,303.02 : 42,344.78 = 20,423.68 : x
  2. Step 2: Convert to fraction form
    28,303.02/42,344.78 = 20,423.68/x
  3. Step 3: Cross multiply
    28,303.02x = 42,344.78 × 20,423.68
  4. Step 4: Simplify right side
    28,303.02x = 864,836,236.39
  5. Step 5: Solve for x
    x = 864,836,236.39/28,303.02
  6. Step 6: Final answer
    x = 30,556.32

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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.