Home / 13,509.80-18,643.52-7,541.28

Finding the Fourth Proportional to 13,509.80, 18,643.52 and 7,541.28

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Solution

The fourth proportional to 13,509.80, 18,643.52 and 7,541.28 is: 10,406.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,509.80 : 18,643.52 = 7,541.28 : x
  2. Step 2: Convert to fraction form
    13,509.80/18,643.52 = 7,541.28/x
  3. Step 3: Cross multiply
    13,509.80x = 18,643.52 × 7,541.28
  4. Step 4: Simplify right side
    13,509.80x = 140,596,004.51
  5. Step 5: Solve for x
    x = 140,596,004.51/13,509.80
  6. Step 6: Final answer
    x = 10,406.96

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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.