Home / 22,688.77-31,305.91-13,255.51

Finding the Fourth Proportional to 22,688.77, 31,305.91 and 13,255.51

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Solution

The fourth proportional to 22,688.77, 31,305.91 and 13,255.51 is: 18,289.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,688.77 : 31,305.91 = 13,255.51 : x
  2. Step 2: Convert to fraction form
    22,688.77/31,305.91 = 13,255.51/x
  3. Step 3: Cross multiply
    22,688.77x = 31,305.91 × 13,255.51
  4. Step 4: Simplify right side
    22,688.77x = 414,975,580.26
  5. Step 5: Solve for x
    x = 414,975,580.26/22,688.77
  6. Step 6: Final answer
    x = 18,289.91

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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.