Home / 12,320.40-18,461.70-9,185.70

Finding the Fourth Proportional to 12,320.40, 18,461.70 and 9,185.70

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Solution

The fourth proportional to 12,320.40, 18,461.70 and 9,185.70 is: 13,764.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,320.40 : 18,461.70 = 9,185.70 : x
  2. Step 2: Convert to fraction form
    12,320.40/18,461.70 = 9,185.70/x
  3. Step 3: Cross multiply
    12,320.40x = 18,461.70 × 9,185.70
  4. Step 4: Simplify right side
    12,320.40x = 169,583,637.69
  5. Step 5: Solve for x
    x = 169,583,637.69/12,320.40
  6. Step 6: Final answer
    x = 13,764.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.