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Finding the Fourth Proportional to 18,854.64, 26,023.68 and 11,686.68

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Solution

The fourth proportional to 18,854.64, 26,023.68 and 11,686.68 is: 16,130.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,854.64 : 26,023.68 = 11,686.68 : x
  2. Step 2: Convert to fraction form
    18,854.64/26,023.68 = 11,686.68/x
  3. Step 3: Cross multiply
    18,854.64x = 26,023.68 × 11,686.68
  4. Step 4: Simplify right side
    18,854.64x = 304,130,420.58
  5. Step 5: Solve for x
    x = 304,130,420.58/18,854.64
  6. Step 6: Final answer
    x = 16,130.27

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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.