Home / 20,271.29-30,258.77-18,807.80

Finding the Fourth Proportional to 20,271.29, 30,258.77 and 18,807.80

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Solution

The fourth proportional to 20,271.29, 30,258.77 and 18,807.80 is: 28,074.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,271.29 : 30,258.77 = 18,807.80 : x
  2. Step 2: Convert to fraction form
    20,271.29/30,258.77 = 18,807.80/x
  3. Step 3: Cross multiply
    20,271.29x = 30,258.77 × 18,807.80
  4. Step 4: Simplify right side
    20,271.29x = 569,100,649.07
  5. Step 5: Solve for x
    x = 569,100,649.07/20,271.29
  6. Step 6: Final answer
    x = 28,074.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.