Home / 13,530.04-18,669.28-7,561.40

Finding the Fourth Proportional to 13,530.04, 18,669.28 and 7,561.40

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Solution

The fourth proportional to 13,530.04, 18,669.28 and 7,561.40 is: 10,433.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,530.04 : 18,669.28 = 7,561.40 : x
  2. Step 2: Convert to fraction form
    13,530.04/18,669.28 = 7,561.40/x
  3. Step 3: Cross multiply
    13,530.04x = 18,669.28 × 7,561.40
  4. Step 4: Simplify right side
    13,530.04x = 141,165,893.79
  5. Step 5: Solve for x
    x = 141,165,893.79/13,530.04
  6. Step 6: Final answer
    x = 10,433.52

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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.