Home / 10,866.21-14,995.43-6,390.15

Finding the Fourth Proportional to 10,866.21, 14,995.43 and 6,390.15

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Solution

The fourth proportional to 10,866.21, 14,995.43 and 6,390.15 is: 8,818.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,866.21 : 14,995.43 = 6,390.15 : x
  2. Step 2: Convert to fraction form
    10,866.21/14,995.43 = 6,390.15/x
  3. Step 3: Cross multiply
    10,866.21x = 14,995.43 × 6,390.15
  4. Step 4: Simplify right side
    10,866.21x = 95,823,047.01
  5. Step 5: Solve for x
    x = 95,823,047.01/10,866.21
  6. Step 6: Final answer
    x = 8,818.44

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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.