Home / 22,686.76-31,309.08-12,615.28

Finding the Fourth Proportional to 22,686.76, 31,309.08 and 12,615.28

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Solution

The fourth proportional to 22,686.76, 31,309.08 and 12,615.28 is: 17,409.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,686.76 : 31,309.08 = 12,615.28 : x
  2. Step 2: Convert to fraction form
    22,686.76/31,309.08 = 12,615.28/x
  3. Step 3: Cross multiply
    22,686.76x = 31,309.08 × 12,615.28
  4. Step 4: Simplify right side
    22,686.76x = 394,972,810.74
  5. Step 5: Solve for x
    x = 394,972,810.74/22,686.76
  6. Step 6: Final answer
    x = 17,409.84

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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.