Home / 13,489.02-18,614.88-7,520.57

Finding the Fourth Proportional to 13,489.02, 18,614.88 and 7,520.57

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Solution

The fourth proportional to 13,489.02, 18,614.88 and 7,520.57 is: 10,378.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,489.02 : 18,614.88 = 7,520.57 : x
  2. Step 2: Convert to fraction form
    13,489.02/18,614.88 = 7,520.57/x
  3. Step 3: Cross multiply
    13,489.02x = 18,614.88 × 7,520.57
  4. Step 4: Simplify right side
    13,489.02x = 139,994,508.08
  5. Step 5: Solve for x
    x = 139,994,508.08/13,489.02
  6. Step 6: Final answer
    x = 10,378.40

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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.