Home / 13,413.76-18,510.12-7,445.43

Finding the Fourth Proportional to 13,413.76, 18,510.12 and 7,445.43

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Solution

The fourth proportional to 13,413.76, 18,510.12 and 7,445.43 is: 10,274.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,413.76 : 18,510.12 = 7,445.43 : x
  2. Step 2: Convert to fraction form
    13,413.76/18,510.12 = 7,445.43/x
  3. Step 3: Cross multiply
    13,413.76x = 18,510.12 × 7,445.43
  4. Step 4: Simplify right side
    13,413.76x = 137,815,802.75
  5. Step 5: Solve for x
    x = 137,815,802.75/13,413.76
  6. Step 6: Final answer
    x = 10,274.21

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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.