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Finding the Fourth Proportional to 19,329.60, 27,139.20 and 19,329.60

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Solution

The fourth proportional to 19,329.60, 27,139.20 and 19,329.60 is: 27,139.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,329.60 : 27,139.20 = 19,329.60 : x
  2. Step 2: Convert to fraction form
    19,329.60/27,139.20 = 19,329.60/x
  3. Step 3: Cross multiply
    19,329.60x = 27,139.20 × 19,329.60
  4. Step 4: Simplify right side
    19,329.60x = 524,589,880.32
  5. Step 5: Solve for x
    x = 524,589,880.32/19,329.60
  6. Step 6: Final answer
    x = 27,139.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.