Home / 19,938.64-27,515.56-10,985.92

Finding the Fourth Proportional to 19,938.64, 27,515.56 and 10,985.92

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Solution

The fourth proportional to 19,938.64, 27,515.56 and 10,985.92 is: 15,160.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,938.64 : 27,515.56 = 10,985.92 : x
  2. Step 2: Convert to fraction form
    19,938.64/27,515.56 = 10,985.92/x
  3. Step 3: Cross multiply
    19,938.64x = 27,515.56 × 10,985.92
  4. Step 4: Simplify right side
    19,938.64x = 302,283,740.92
  5. Step 5: Solve for x
    x = 302,283,740.92/19,938.64
  6. Step 6: Final answer
    x = 15,160.70

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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.