Home / 18,117.60-27,176.40-6,429.30

Finding the Fourth Proportional to 18,117.60, 27,176.40 and 6,429.30

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Solution

The fourth proportional to 18,117.60, 27,176.40 and 6,429.30 is: 9,643.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,117.60 : 27,176.40 = 6,429.30 : x
  2. Step 2: Convert to fraction form
    18,117.60/27,176.40 = 6,429.30/x
  3. Step 3: Cross multiply
    18,117.60x = 27,176.40 × 6,429.30
  4. Step 4: Simplify right side
    18,117.60x = 174,725,228.52
  5. Step 5: Solve for x
    x = 174,725,228.52/18,117.60
  6. Step 6: Final answer
    x = 9,643.95

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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.