Home / 18,989.60-26,208.20-14,265.68

Finding the Fourth Proportional to 18,989.60, 26,208.20 and 14,265.68

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Solution

The fourth proportional to 18,989.60, 26,208.20 and 14,265.68 is: 19,688.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989.60 : 26,208.20 = 14,265.68 : x
  2. Step 2: Convert to fraction form
    18,989.60/26,208.20 = 14,265.68/x
  3. Step 3: Cross multiply
    18,989.60x = 26,208.20 × 14,265.68
  4. Step 4: Simplify right side
    18,989.60x = 373,877,794.58
  5. Step 5: Solve for x
    x = 373,877,794.58/18,989.60
  6. Step 6: Final answer
    x = 19,688.56

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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.