Home / 12,018.47-18,030.95-10,861.79

Finding the Fourth Proportional to 12,018.47, 18,030.95 and 10,861.79

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Solution

The fourth proportional to 12,018.47, 18,030.95 and 10,861.79 is: 16,295.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,018.47 : 18,030.95 = 10,861.79 : x
  2. Step 2: Convert to fraction form
    12,018.47/18,030.95 = 10,861.79/x
  3. Step 3: Cross multiply
    12,018.47x = 18,030.95 × 10,861.79
  4. Step 4: Simplify right side
    12,018.47x = 195,848,392.40
  5. Step 5: Solve for x
    x = 195,848,392.40/12,018.47
  6. Step 6: Final answer
    x = 16,295.62

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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.