Home / 10,398.09-15,583.53-9,078.51

Finding the Fourth Proportional to 10,398.09, 15,583.53 and 9,078.51

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Solution

The fourth proportional to 10,398.09, 15,583.53 and 9,078.51 is: 13,605.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,398.09 : 15,583.53 = 9,078.51 : x
  2. Step 2: Convert to fraction form
    10,398.09/15,583.53 = 9,078.51/x
  3. Step 3: Cross multiply
    10,398.09x = 15,583.53 × 9,078.51
  4. Step 4: Simplify right side
    10,398.09x = 141,475,232.94
  5. Step 5: Solve for x
    x = 141,475,232.94/10,398.09
  6. Step 6: Final answer
    x = 13,605.89

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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.