Home / 19,985.92-27,579.36-12,030.72

Finding the Fourth Proportional to 19,985.92, 27,579.36 and 12,030.72

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Solution

The fourth proportional to 19,985.92, 27,579.36 and 12,030.72 is: 16,601.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,985.92 : 27,579.36 = 12,030.72 : x
  2. Step 2: Convert to fraction form
    19,985.92/27,579.36 = 12,030.72/x
  3. Step 3: Cross multiply
    19,985.92x = 27,579.36 × 12,030.72
  4. Step 4: Simplify right side
    19,985.92x = 331,799,557.94
  5. Step 5: Solve for x
    x = 331,799,557.94/19,985.92
  6. Step 6: Final answer
    x = 16,601.67

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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.