Home / 12,666.48-19,003.20-5,274.40

Finding the Fourth Proportional to 12,666.48, 19,003.20 and 5,274.40

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Solution

The fourth proportional to 12,666.48, 19,003.20 and 5,274.40 is: 7,913.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,666.48 : 19,003.20 = 5,274.40 : x
  2. Step 2: Convert to fraction form
    12,666.48/19,003.20 = 5,274.40/x
  3. Step 3: Cross multiply
    12,666.48x = 19,003.20 × 5,274.40
  4. Step 4: Simplify right side
    12,666.48x = 100,230,478.08
  5. Step 5: Solve for x
    x = 100,230,478.08/12,666.48
  6. Step 6: Final answer
    x = 7,913.05

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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.