Home / 10,985.81-15,160.70-6,739.22

Finding the Fourth Proportional to 10,985.81, 15,160.70 and 6,739.22

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Solution

The fourth proportional to 10,985.81, 15,160.70 and 6,739.22 is: 9,300.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,985.81 : 15,160.70 = 6,739.22 : x
  2. Step 2: Convert to fraction form
    10,985.81/15,160.70 = 6,739.22/x
  3. Step 3: Cross multiply
    10,985.81x = 15,160.70 × 6,739.22
  4. Step 4: Simplify right side
    10,985.81x = 102,171,326.08
  5. Step 5: Solve for x
    x = 102,171,326.08/10,985.81
  6. Step 6: Final answer
    x = 9,300.30

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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.