Home / 42,988.32-64,495.44-13,409.28

Finding the Fourth Proportional to 42,988.32, 64,495.44 and 13,409.28

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Solution

The fourth proportional to 42,988.32, 64,495.44 and 13,409.28 is: 20,117.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,988.32 : 64,495.44 = 13,409.28 : x
  2. Step 2: Convert to fraction form
    42,988.32/64,495.44 = 13,409.28/x
  3. Step 3: Cross multiply
    42,988.32x = 64,495.44 × 13,409.28
  4. Step 4: Simplify right side
    42,988.32x = 864,837,413.68
  5. Step 5: Solve for x
    x = 864,837,413.68/42,988.32
  6. Step 6: Final answer
    x = 20,117.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.