Home / 18,822.04-28,011.29-18,122.20

Finding the Fourth Proportional to 18,822.04, 28,011.29 and 18,122.20

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Solution

The fourth proportional to 18,822.04, 28,011.29 and 18,122.20 is: 26,969.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,822.04 : 28,011.29 = 18,122.20 : x
  2. Step 2: Convert to fraction form
    18,822.04/28,011.29 = 18,122.20/x
  3. Step 3: Cross multiply
    18,822.04x = 28,011.29 × 18,122.20
  4. Step 4: Simplify right side
    18,822.04x = 507,626,199.64
  5. Step 5: Solve for x
    x = 507,626,199.64/18,822.04
  6. Step 6: Final answer
    x = 26,969.78

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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.