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Finding the Fourth Proportional to 13,394.19, 18,482.95 and 7,425.74

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Solution

The fourth proportional to 13,394.19, 18,482.95 and 7,425.74 is: 10,246.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,394.19 : 18,482.95 = 7,425.74 : x
  2. Step 2: Convert to fraction form
    13,394.19/18,482.95 = 7,425.74/x
  3. Step 3: Cross multiply
    13,394.19x = 18,482.95 × 7,425.74
  4. Step 4: Simplify right side
    13,394.19x = 137,249,636.62
  5. Step 5: Solve for x
    x = 137,249,636.62/13,394.19
  6. Step 6: Final answer
    x = 10,246.95

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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.