Home / 13,587.69-18,760.23-8,490.99

Finding the Fourth Proportional to 13,587.69, 18,760.23 and 8,490.99

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Solution

The fourth proportional to 13,587.69, 18,760.23 and 8,490.99 is: 11,723.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,587.69 : 18,760.23 = 8,490.99 : x
  2. Step 2: Convert to fraction form
    13,587.69/18,760.23 = 8,490.99/x
  3. Step 3: Cross multiply
    13,587.69x = 18,760.23 × 8,490.99
  4. Step 4: Simplify right side
    13,587.69x = 159,292,963.84
  5. Step 5: Solve for x
    x = 159,292,963.84/13,587.69
  6. Step 6: Final answer
    x = 11,723.33

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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.