Home / 15,746.39-21,730.02-8,672.75

Finding the Fourth Proportional to 15,746.39, 21,730.02 and 8,672.75

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Solution

The fourth proportional to 15,746.39, 21,730.02 and 8,672.75 is: 11,968.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,746.39 : 21,730.02 = 8,672.75 : x
  2. Step 2: Convert to fraction form
    15,746.39/21,730.02 = 8,672.75/x
  3. Step 3: Cross multiply
    15,746.39x = 21,730.02 × 8,672.75
  4. Step 4: Simplify right side
    15,746.39x = 188,459,030.96
  5. Step 5: Solve for x
    x = 188,459,030.96/15,746.39
  6. Step 6: Final answer
    x = 11,968.40

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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.