Home / 13,328.60-18,387.63-7,662.04

Finding the Fourth Proportional to 13,328.60, 18,387.63 and 7,662.04

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Solution

The fourth proportional to 13,328.60, 18,387.63 and 7,662.04 is: 10,570.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,328.60 : 18,387.63 = 7,662.04 : x
  2. Step 2: Convert to fraction form
    13,328.60/18,387.63 = 7,662.04/x
  3. Step 3: Cross multiply
    13,328.60x = 18,387.63 × 7,662.04
  4. Step 4: Simplify right side
    13,328.60x = 140,886,710.60
  5. Step 5: Solve for x
    x = 140,886,710.60/13,328.60
  6. Step 6: Final answer
    x = 10,570.26

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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.