Home / 13,505.60-18,638.40-7,537.16

Finding the Fourth Proportional to 13,505.60, 18,638.40 and 7,537.16

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Solution

The fourth proportional to 13,505.60, 18,638.40 and 7,537.16 is: 10,401.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,505.60 : 18,638.40 = 7,537.16 : x
  2. Step 2: Convert to fraction form
    13,505.60/18,638.40 = 7,537.16/x
  3. Step 3: Cross multiply
    13,505.60x = 18,638.40 × 7,537.16
  4. Step 4: Simplify right side
    13,505.60x = 140,480,602.94
  5. Step 5: Solve for x
    x = 140,480,602.94/13,505.60
  6. Step 6: Final answer
    x = 10,401.66

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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.