Home / 28,011.42-42,017.22-19,219.68

Finding the Fourth Proportional to 28,011.42, 42,017.22 and 19,219.68

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Solution

The fourth proportional to 28,011.42, 42,017.22 and 19,219.68 is: 28,829.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011.42 : 42,017.22 = 19,219.68 : x
  2. Step 2: Convert to fraction form
    28,011.42/42,017.22 = 19,219.68/x
  3. Step 3: Cross multiply
    28,011.42x = 42,017.22 × 19,219.68
  4. Step 4: Simplify right side
    28,011.42x = 807,557,522.89
  5. Step 5: Solve for x
    x = 807,557,522.89/28,011.42
  6. Step 6: Final answer
    x = 28,829.58

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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.