Home / 13,415.04-18,525.36-8,643.36

Finding the Fourth Proportional to 13,415.04, 18,525.36 and 8,643.36

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Solution

The fourth proportional to 13,415.04, 18,525.36 and 8,643.36 is: 11,935.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,415.04 : 18,525.36 = 8,643.36 : x
  2. Step 2: Convert to fraction form
    13,415.04/18,525.36 = 8,643.36/x
  3. Step 3: Cross multiply
    13,415.04x = 18,525.36 × 8,643.36
  4. Step 4: Simplify right side
    13,415.04x = 160,121,355.61
  5. Step 5: Solve for x
    x = 160,121,355.61/13,415.04
  6. Step 6: Final answer
    x = 11,935.96

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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.