Home / 12,665.21-18,988.16-7,666.52

Finding the Fourth Proportional to 12,665.21, 18,988.16 and 7,666.52

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Solution

The fourth proportional to 12,665.21, 18,988.16 and 7,666.52 is: 11,493.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,665.21 : 18,988.16 = 7,666.52 : x
  2. Step 2: Convert to fraction form
    12,665.21/18,988.16 = 7,666.52/x
  3. Step 3: Cross multiply
    12,665.21x = 18,988.16 × 7,666.52
  4. Step 4: Simplify right side
    12,665.21x = 145,572,975.13
  5. Step 5: Solve for x
    x = 145,572,975.13/12,665.21
  6. Step 6: Final answer
    x = 11,493.93

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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.