Home / 19,663.68-29,426.20-12,271.60

Finding the Fourth Proportional to 19,663.68, 29,426.20 and 12,271.60

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Solution

The fourth proportional to 19,663.68, 29,426.20 and 12,271.60 is: 18,364.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,663.68 : 29,426.20 = 12,271.60 : x
  2. Step 2: Convert to fraction form
    19,663.68/29,426.20 = 12,271.60/x
  3. Step 3: Cross multiply
    19,663.68x = 29,426.20 × 12,271.60
  4. Step 4: Simplify right side
    19,663.68x = 361,106,555.92
  5. Step 5: Solve for x
    x = 361,106,555.92/19,663.68
  6. Step 6: Final answer
    x = 18,364.14

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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.