Home / 13,135.72-18,130.98-7,548.52

Finding the Fourth Proportional to 13,135.72, 18,130.98 and 7,548.52

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Solution

The fourth proportional to 13,135.72, 18,130.98 and 7,548.52 is: 10,419.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,135.72 : 18,130.98 = 7,548.52 : x
  2. Step 2: Convert to fraction form
    13,135.72/18,130.98 = 7,548.52/x
  3. Step 3: Cross multiply
    13,135.72x = 18,130.98 × 7,548.52
  4. Step 4: Simplify right side
    13,135.72x = 136,862,065.15
  5. Step 5: Solve for x
    x = 136,862,065.15/13,135.72
  6. Step 6: Final answer
    x = 10,419.08

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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.