Home / 12,645.81-18,970.76-4,748.94

Finding the Fourth Proportional to 12,645.81, 18,970.76 and 4,748.94

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Solution

The fourth proportional to 12,645.81, 18,970.76 and 4,748.94 is: 7,124.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645.81 : 18,970.76 = 4,748.94 : x
  2. Step 2: Convert to fraction form
    12,645.81/18,970.76 = 4,748.94/x
  3. Step 3: Cross multiply
    12,645.81x = 18,970.76 × 4,748.94
  4. Step 4: Simplify right side
    12,645.81x = 90,091,012.87
  5. Step 5: Solve for x
    x = 90,091,012.87/12,645.81
  6. Step 6: Final answer
    x = 7,124.18

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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.