Home / 19,290.90-28,921.23-7,612.86

Finding the Fourth Proportional to 19,290.90, 28,921.23 and 7,612.86

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Solution

The fourth proportional to 19,290.90, 28,921.23 and 7,612.86 is: 11,413.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,290.90 : 28,921.23 = 7,612.86 : x
  2. Step 2: Convert to fraction form
    19,290.90/28,921.23 = 7,612.86/x
  3. Step 3: Cross multiply
    19,290.90x = 28,921.23 × 7,612.86
  4. Step 4: Simplify right side
    19,290.90x = 220,173,275.02
  5. Step 5: Solve for x
    x = 220,173,275.02/19,290.90
  6. Step 6: Final answer
    x = 11,413.32

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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.