Home / 12,291.40-18,424.50-4,885.84

Finding the Fourth Proportional to 12,291.40, 18,424.50 and 4,885.84

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Solution

The fourth proportional to 12,291.40, 18,424.50 and 4,885.84 is: 7,323.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,291.40 : 18,424.50 = 4,885.84 : x
  2. Step 2: Convert to fraction form
    12,291.40/18,424.50 = 4,885.84/x
  3. Step 3: Cross multiply
    12,291.40x = 18,424.50 × 4,885.84
  4. Step 4: Simplify right side
    12,291.40x = 90,019,159.08
  5. Step 5: Solve for x
    x = 90,019,159.08/12,291.40
  6. Step 6: Final answer
    x = 7,323.75

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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.