Home / 15,746.40-21,730.36-8,673.20

Finding the Fourth Proportional to 15,746.40, 21,730.36 and 8,673.20

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Solution

The fourth proportional to 15,746.40, 21,730.36 and 8,673.20 is: 11,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,746.40 : 21,730.36 = 8,673.20 : x
  2. Step 2: Convert to fraction form
    15,746.40/21,730.36 = 8,673.20/x
  3. Step 3: Cross multiply
    15,746.40x = 21,730.36 × 8,673.20
  4. Step 4: Simplify right side
    15,746.40x = 188,471,758.35
  5. Step 5: Solve for x
    x = 188,471,758.35/15,746.40
  6. Step 6: Final answer
    x = 11,969.20

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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.