Home / 13,507.02-18,639.52-7,540.16

Finding the Fourth Proportional to 13,507.02, 18,639.52 and 7,540.16

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Solution

The fourth proportional to 13,507.02, 18,639.52 and 7,540.16 is: 10,405.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,507.02 : 18,639.52 = 7,540.16 : x
  2. Step 2: Convert to fraction form
    13,507.02/18,639.52 = 7,540.16/x
  3. Step 3: Cross multiply
    13,507.02x = 18,639.52 × 7,540.16
  4. Step 4: Simplify right side
    13,507.02x = 140,544,963.12
  5. Step 5: Solve for x
    x = 140,544,963.12/13,507.02
  6. Step 6: Final answer
    x = 10,405.33

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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.