Home / 13,413.60-18,510.40-7,445.11

Finding the Fourth Proportional to 13,413.60, 18,510.40 and 7,445.11

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Solution

The fourth proportional to 13,413.60, 18,510.40 and 7,445.11 is: 10,274.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,413.60 : 18,510.40 = 7,445.11 : x
  2. Step 2: Convert to fraction form
    13,413.60/18,510.40 = 7,445.11/x
  3. Step 3: Cross multiply
    13,413.60x = 18,510.40 × 7,445.11
  4. Step 4: Simplify right side
    13,413.60x = 137,811,964.14
  5. Step 5: Solve for x
    x = 137,811,964.14/13,413.60
  6. Step 6: Final answer
    x = 10,274.05

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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.