Home / 11,420.77-17,139.81-4,851.57

Finding the Fourth Proportional to 11,420.77, 17,139.81 and 4,851.57

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Solution

The fourth proportional to 11,420.77, 17,139.81 and 4,851.57 is: 7,281.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,420.77 : 17,139.81 = 4,851.57 : x
  2. Step 2: Convert to fraction form
    11,420.77/17,139.81 = 4,851.57/x
  3. Step 3: Cross multiply
    11,420.77x = 17,139.81 × 4,851.57
  4. Step 4: Simplify right side
    11,420.77x = 83,154,988.00
  5. Step 5: Solve for x
    x = 83,154,988.00/11,420.77
  6. Step 6: Final answer
    x = 7,281.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.