Home / 28,235.81-42,357.62-9,521.20

Finding the Fourth Proportional to 28,235.81, 42,357.62 and 9,521.20

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Solution

The fourth proportional to 28,235.81, 42,357.62 and 9,521.20 is: 14,283.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,235.81 : 42,357.62 = 9,521.20 : x
  2. Step 2: Convert to fraction form
    28,235.81/42,357.62 = 9,521.20/x
  3. Step 3: Cross multiply
    28,235.81x = 42,357.62 × 9,521.20
  4. Step 4: Simplify right side
    28,235.81x = 403,295,371.54
  5. Step 5: Solve for x
    x = 403,295,371.54/28,235.81
  6. Step 6: Final answer
    x = 14,283.12

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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.