Home / 13,730.59-18,948.16-7,680.84

Finding the Fourth Proportional to 13,730.59, 18,948.16 and 7,680.84

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Solution

The fourth proportional to 13,730.59, 18,948.16 and 7,680.84 is: 10,599.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,730.59 : 18,948.16 = 7,680.84 : x
  2. Step 2: Convert to fraction form
    13,730.59/18,948.16 = 7,680.84/x
  3. Step 3: Cross multiply
    13,730.59x = 18,948.16 × 7,680.84
  4. Step 4: Simplify right side
    13,730.59x = 145,537,723.80
  5. Step 5: Solve for x
    x = 145,537,723.80/13,730.59
  6. Step 6: Final answer
    x = 10,599.52

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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.