Home / 9,943.04-13,721.16-5,405.60

Finding the Fourth Proportional to 9,943.04, 13,721.16 and 5,405.60

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Solution

The fourth proportional to 9,943.04, 13,721.16 and 5,405.60 is: 7,459.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,943.04 : 13,721.16 = 5,405.60 : x
  2. Step 2: Convert to fraction form
    9,943.04/13,721.16 = 5,405.60/x
  3. Step 3: Cross multiply
    9,943.04x = 13,721.16 × 5,405.60
  4. Step 4: Simplify right side
    9,943.04x = 74,171,102.50
  5. Step 5: Solve for x
    x = 74,171,102.50/9,943.04
  6. Step 6: Final answer
    x = 7,459.60

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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.