Home / 19,817.60-27,366.80-12,756.28

Finding the Fourth Proportional to 19,817.60, 27,366.80 and 12,756.28

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Solution

The fourth proportional to 19,817.60, 27,366.80 and 12,756.28 is: 17,615.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,817.60 : 27,366.80 = 12,756.28 : x
  2. Step 2: Convert to fraction form
    19,817.60/27,366.80 = 12,756.28/x
  3. Step 3: Cross multiply
    19,817.60x = 27,366.80 × 12,756.28
  4. Step 4: Simplify right side
    19,817.60x = 349,098,563.50
  5. Step 5: Solve for x
    x = 349,098,563.50/19,817.60
  6. Step 6: Final answer
    x = 17,615.58

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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.