Home / 13,035.40-17,989.13-7,661.77

Finding the Fourth Proportional to 13,035.40, 17,989.13 and 7,661.77

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Solution

The fourth proportional to 13,035.40, 17,989.13 and 7,661.77 is: 10,573.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,035.40 : 17,989.13 = 7,661.77 : x
  2. Step 2: Convert to fraction form
    13,035.40/17,989.13 = 7,661.77/x
  3. Step 3: Cross multiply
    13,035.40x = 17,989.13 × 7,661.77
  4. Step 4: Simplify right side
    13,035.40x = 137,828,550.74
  5. Step 5: Solve for x
    x = 137,828,550.74/13,035.40
  6. Step 6: Final answer
    x = 10,573.41

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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.