Home / 35,979.64-53,969.79-13,787.72

Finding the Fourth Proportional to 35,979.64, 53,969.79 and 13,787.72

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Solution

The fourth proportional to 35,979.64, 53,969.79 and 13,787.72 is: 20,681.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,979.64 : 53,969.79 = 13,787.72 : x
  2. Step 2: Convert to fraction form
    35,979.64/53,969.79 = 13,787.72/x
  3. Step 3: Cross multiply
    35,979.64x = 53,969.79 × 13,787.72
  4. Step 4: Simplify right side
    35,979.64x = 744,120,337.22
  5. Step 5: Solve for x
    x = 744,120,337.22/35,979.64
  6. Step 6: Final answer
    x = 20,681.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.