Home / 18,415.40-25,413.18-10,457.24

Finding the Fourth Proportional to 18,415.40, 25,413.18 and 10,457.24

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Solution

The fourth proportional to 18,415.40, 25,413.18 and 10,457.24 is: 14,430.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,415.40 : 25,413.18 = 10,457.24 : x
  2. Step 2: Convert to fraction form
    18,415.40/25,413.18 = 10,457.24/x
  3. Step 3: Cross multiply
    18,415.40x = 25,413.18 × 10,457.24
  4. Step 4: Simplify right side
    18,415.40x = 265,751,722.42
  5. Step 5: Solve for x
    x = 265,751,722.42/18,415.40
  6. Step 6: Final answer
    x = 14,430.95

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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.