Home / 13,307.49-18,364.08-7,339.72

Finding the Fourth Proportional to 13,307.49, 18,364.08 and 7,339.72

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Solution

The fourth proportional to 13,307.49, 18,364.08 and 7,339.72 is: 10,128.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,307.49 : 18,364.08 = 7,339.72 : x
  2. Step 2: Convert to fraction form
    13,307.49/18,364.08 = 7,339.72/x
  3. Step 3: Cross multiply
    13,307.49x = 18,364.08 × 7,339.72
  4. Step 4: Simplify right side
    13,307.49x = 134,787,269.52
  5. Step 5: Solve for x
    x = 134,787,269.52/13,307.49
  6. Step 6: Final answer
    x = 10,128.68

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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.