Home / 27,920.64-41,880.89-12,123.63

Finding the Fourth Proportional to 27,920.64, 41,880.89 and 12,123.63

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Solution

The fourth proportional to 27,920.64, 41,880.89 and 12,123.63 is: 18,185.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,920.64 : 41,880.89 = 12,123.63 : x
  2. Step 2: Convert to fraction form
    27,920.64/41,880.89 = 12,123.63/x
  3. Step 3: Cross multiply
    27,920.64x = 41,880.89 × 12,123.63
  4. Step 4: Simplify right side
    27,920.64x = 507,748,353.81
  5. Step 5: Solve for x
    x = 507,748,353.81/27,920.64
  6. Step 6: Final answer
    x = 18,185.41

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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.