Home / 15,413.52-21,279.81-10,117.62

Finding the Fourth Proportional to 15,413.52, 21,279.81 and 10,117.62

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Solution

The fourth proportional to 15,413.52, 21,279.81 and 10,117.62 is: 13,968.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,413.52 : 21,279.81 = 10,117.62 : x
  2. Step 2: Convert to fraction form
    15,413.52/21,279.81 = 10,117.62/x
  3. Step 3: Cross multiply
    15,413.52x = 21,279.81 × 10,117.62
  4. Step 4: Simplify right side
    15,413.52x = 215,301,031.25
  5. Step 5: Solve for x
    x = 215,301,031.25/15,413.52
  6. Step 6: Final answer
    x = 13,968.32

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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.