Home / 11,681.28-16,120.53-6,646.23

Finding the Fourth Proportional to 11,681.28, 16,120.53 and 6,646.23

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Solution

The fourth proportional to 11,681.28, 16,120.53 and 6,646.23 is: 9,172.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,681.28 : 16,120.53 = 6,646.23 : x
  2. Step 2: Convert to fraction form
    11,681.28/16,120.53 = 6,646.23/x
  3. Step 3: Cross multiply
    11,681.28x = 16,120.53 × 6,646.23
  4. Step 4: Simplify right side
    11,681.28x = 107,140,750.10
  5. Step 5: Solve for x
    x = 107,140,750.10/11,681.28
  6. Step 6: Final answer
    x = 9,172.00

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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.