Home / 9,903.61-13,666.66-5,712.49

Finding the Fourth Proportional to 9,903.61, 13,666.66 and 5,712.49

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Solution

The fourth proportional to 9,903.61, 13,666.66 and 5,712.49 is: 7,883.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,903.61 : 13,666.66 = 5,712.49 : x
  2. Step 2: Convert to fraction form
    9,903.61/13,666.66 = 5,712.49/x
  3. Step 3: Cross multiply
    9,903.61x = 13,666.66 × 5,712.49
  4. Step 4: Simplify right side
    9,903.61x = 78,070,658.58
  5. Step 5: Solve for x
    x = 78,070,658.58/9,903.61
  6. Step 6: Final answer
    x = 7,883.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.