Home / 19,938.60-27,528.52-12,396.20

Finding the Fourth Proportional to 19,938.60, 27,528.52 and 12,396.20

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Solution

The fourth proportional to 19,938.60, 27,528.52 and 12,396.20 is: 17,115.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,938.60 : 27,528.52 = 12,396.20 : x
  2. Step 2: Convert to fraction form
    19,938.60/27,528.52 = 12,396.20/x
  3. Step 3: Cross multiply
    19,938.60x = 27,528.52 × 12,396.20
  4. Step 4: Simplify right side
    19,938.60x = 341,249,039.62
  5. Step 5: Solve for x
    x = 341,249,039.62/19,938.60
  6. Step 6: Final answer
    x = 17,115.00

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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.