Home / 13,549.57-18,690.88-7,883.68

Finding the Fourth Proportional to 13,549.57, 18,690.88 and 7,883.68

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Solution

The fourth proportional to 13,549.57, 18,690.88 and 7,883.68 is: 10,875.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,549.57 : 18,690.88 = 7,883.68 : x
  2. Step 2: Convert to fraction form
    13,549.57/18,690.88 = 7,883.68/x
  3. Step 3: Cross multiply
    13,549.57x = 18,690.88 × 7,883.68
  4. Step 4: Simplify right side
    13,549.57x = 147,352,916.84
  5. Step 5: Solve for x
    x = 147,352,916.84/13,549.57
  6. Step 6: Final answer
    x = 10,875.10

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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.