Home / 13,425.40-18,529.32-8,643.98

Finding the Fourth Proportional to 13,425.40, 18,529.32 and 8,643.98

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Solution

The fourth proportional to 13,425.40, 18,529.32 and 8,643.98 is: 11,930.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,425.40 : 18,529.32 = 8,643.98 : x
  2. Step 2: Convert to fraction form
    13,425.40/18,529.32 = 8,643.98/x
  3. Step 3: Cross multiply
    13,425.40x = 18,529.32 × 8,643.98
  4. Step 4: Simplify right side
    13,425.40x = 160,167,071.49
  5. Step 5: Solve for x
    x = 160,167,071.49/13,425.40
  6. Step 6: Final answer
    x = 11,930.15

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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.