Home / 13,539.52-18,685.40-7,571.19

Finding the Fourth Proportional to 13,539.52, 18,685.40 and 7,571.19

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Solution

The fourth proportional to 13,539.52, 18,685.40 and 7,571.19 is: 10,448.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,539.52 : 18,685.40 = 7,571.19 : x
  2. Step 2: Convert to fraction form
    13,539.52/18,685.40 = 7,571.19/x
  3. Step 3: Cross multiply
    13,539.52x = 18,685.40 × 7,571.19
  4. Step 4: Simplify right side
    13,539.52x = 141,470,713.63
  5. Step 5: Solve for x
    x = 141,470,713.63/13,539.52
  6. Step 6: Final answer
    x = 10,448.72

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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.