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Finding the Fourth Proportional to 11,878.68, 17,730.28 and 10,477.88

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Solution

The fourth proportional to 11,878.68, 17,730.28 and 10,477.88 is: 15,639.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,878.68 : 17,730.28 = 10,477.88 : x
  2. Step 2: Convert to fraction form
    11,878.68/17,730.28 = 10,477.88/x
  3. Step 3: Cross multiply
    11,878.68x = 17,730.28 × 10,477.88
  4. Step 4: Simplify right side
    11,878.68x = 185,775,746.21
  5. Step 5: Solve for x
    x = 185,775,746.21/11,878.68
  6. Step 6: Final answer
    x = 15,639.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.