Home / 13,772.40-18,976.60-9,288.35

Finding the Fourth Proportional to 13,772.40, 18,976.60 and 9,288.35

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Solution

The fourth proportional to 13,772.40, 18,976.60 and 9,288.35 is: 12,798.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,772.40 : 18,976.60 = 9,288.35 : x
  2. Step 2: Convert to fraction form
    13,772.40/18,976.60 = 9,288.35/x
  3. Step 3: Cross multiply
    13,772.40x = 18,976.60 × 9,288.35
  4. Step 4: Simplify right side
    13,772.40x = 176,261,302.61
  5. Step 5: Solve for x
    x = 176,261,302.61/13,772.40
  6. Step 6: Final answer
    x = 12,798.15

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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.