Home / 19,016.51-28,521.12-7,328.21

Finding the Fourth Proportional to 19,016.51, 28,521.12 and 7,328.21

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Solution

The fourth proportional to 19,016.51, 28,521.12 and 7,328.21 is: 10,990.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,016.51 : 28,521.12 = 7,328.21 : x
  2. Step 2: Convert to fraction form
    19,016.51/28,521.12 = 7,328.21/x
  3. Step 3: Cross multiply
    19,016.51x = 28,521.12 × 7,328.21
  4. Step 4: Simplify right side
    19,016.51x = 209,008,756.80
  5. Step 5: Solve for x
    x = 209,008,756.80/19,016.51
  6. Step 6: Final answer
    x = 10,990.91

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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.