Home / 21,117.89-29,154.26-14,413.52

Finding the Fourth Proportional to 21,117.89, 29,154.26 and 14,413.52

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Solution

The fourth proportional to 21,117.89, 29,154.26 and 14,413.52 is: 19,898.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,117.89 : 29,154.26 = 14,413.52 : x
  2. Step 2: Convert to fraction form
    21,117.89/29,154.26 = 14,413.52/x
  3. Step 3: Cross multiply
    21,117.89x = 29,154.26 × 14,413.52
  4. Step 4: Simplify right side
    21,117.89x = 420,215,509.60
  5. Step 5: Solve for x
    x = 420,215,509.60/21,117.89
  6. Step 6: Final answer
    x = 19,898.56

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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.