Home / 21,364.24-29,479.08-12,413.20

Finding the Fourth Proportional to 21,364.24, 29,479.08 and 12,413.20

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Solution

The fourth proportional to 21,364.24, 29,479.08 and 12,413.20 is: 17,128.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,364.24 : 29,479.08 = 12,413.20 : x
  2. Step 2: Convert to fraction form
    21,364.24/29,479.08 = 12,413.20/x
  3. Step 3: Cross multiply
    21,364.24x = 29,479.08 × 12,413.20
  4. Step 4: Simplify right side
    21,364.24x = 365,929,715.86
  5. Step 5: Solve for x
    x = 365,929,715.86/21,364.24
  6. Step 6: Final answer
    x = 17,128.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.