Home / 15,746.81-21,730.41-8,673.08

Finding the Fourth Proportional to 15,746.81, 21,730.41 and 8,673.08

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Solution

The fourth proportional to 15,746.81, 21,730.41 and 8,673.08 is: 11,968.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,746.81 : 21,730.41 = 8,673.08 : x
  2. Step 2: Convert to fraction form
    15,746.81/21,730.41 = 8,673.08/x
  3. Step 3: Cross multiply
    15,746.81x = 21,730.41 × 8,673.08
  4. Step 4: Simplify right side
    15,746.81x = 188,469,475.71
  5. Step 5: Solve for x
    x = 188,469,475.71/15,746.81
  6. Step 6: Final answer
    x = 11,968.74

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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.