Home / 13,291.31-18,329.68-9,700.58

Finding the Fourth Proportional to 13,291.31, 18,329.68 and 9,700.58

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Solution

The fourth proportional to 13,291.31, 18,329.68 and 9,700.58 is: 13,377.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.31 : 18,329.68 = 9,700.58 : x
  2. Step 2: Convert to fraction form
    13,291.31/18,329.68 = 9,700.58/x
  3. Step 3: Cross multiply
    13,291.31x = 18,329.68 × 9,700.58
  4. Step 4: Simplify right side
    13,291.31x = 177,808,435.57
  5. Step 5: Solve for x
    x = 177,808,435.57/13,291.31
  6. Step 6: Final answer
    x = 13,377.80

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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.