Home / 10,919.07-15,070.74-6,939.41

Finding the Fourth Proportional to 10,919.07, 15,070.74 and 6,939.41

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Solution

The fourth proportional to 10,919.07, 15,070.74 and 6,939.41 is: 9,577.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.07 : 15,070.74 = 6,939.41 : x
  2. Step 2: Convert to fraction form
    10,919.07/15,070.74 = 6,939.41/x
  3. Step 3: Cross multiply
    10,919.07x = 15,070.74 × 6,939.41
  4. Step 4: Simplify right side
    10,919.07x = 104,581,968.51
  5. Step 5: Solve for x
    x = 104,581,968.51/10,919.07
  6. Step 6: Final answer
    x = 9,577.92

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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.