Home / 15,413.28-21,275.64-9,125.34

Finding the Fourth Proportional to 15,413.28, 21,275.64 and 9,125.34

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Solution

The fourth proportional to 15,413.28, 21,275.64 and 9,125.34 is: 12,596.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,413.28 : 21,275.64 = 9,125.34 : x
  2. Step 2: Convert to fraction form
    15,413.28/21,275.64 = 9,125.34/x
  3. Step 3: Cross multiply
    15,413.28x = 21,275.64 × 9,125.34
  4. Step 4: Simplify right side
    15,413.28x = 194,147,448.72
  5. Step 5: Solve for x
    x = 194,147,448.72/15,413.28
  6. Step 6: Final answer
    x = 12,596.12

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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.