Home / 13,539.24-18,686.16-9,775.08

Finding the Fourth Proportional to 13,539.24, 18,686.16 and 9,775.08

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Solution

The fourth proportional to 13,539.24, 18,686.16 and 9,775.08 is: 13,491.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,539.24 : 18,686.16 = 9,775.08 : x
  2. Step 2: Convert to fraction form
    13,539.24/18,686.16 = 9,775.08/x
  3. Step 3: Cross multiply
    13,539.24x = 18,686.16 × 9,775.08
  4. Step 4: Simplify right side
    13,539.24x = 182,658,708.89
  5. Step 5: Solve for x
    x = 182,658,708.89/13,539.24
  6. Step 6: Final answer
    x = 13,491.06

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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.