Home / 19,665.64-27,139.20-10,712.60

Finding the Fourth Proportional to 19,665.64, 27,139.20 and 10,712.60

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Solution

The fourth proportional to 19,665.64, 27,139.20 and 10,712.60 is: 14,783.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,665.64 : 27,139.20 = 10,712.60 : x
  2. Step 2: Convert to fraction form
    19,665.64/27,139.20 = 10,712.60/x
  3. Step 3: Cross multiply
    19,665.64x = 27,139.20 × 10,712.60
  4. Step 4: Simplify right side
    19,665.64x = 290,731,393.92
  5. Step 5: Solve for x
    x = 290,731,393.92/19,665.64
  6. Step 6: Final answer
    x = 14,783.72

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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.