Home / 15,400.71-21,252.54-8,686.27

Finding the Fourth Proportional to 15,400.71, 21,252.54 and 8,686.27

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Solution

The fourth proportional to 15,400.71, 21,252.54 and 8,686.27 is: 11,986.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,400.71 : 21,252.54 = 8,686.27 : x
  2. Step 2: Convert to fraction form
    15,400.71/21,252.54 = 8,686.27/x
  3. Step 3: Cross multiply
    15,400.71x = 21,252.54 × 8,686.27
  4. Step 4: Simplify right side
    15,400.71x = 184,605,300.63
  5. Step 5: Solve for x
    x = 184,605,300.63/15,400.71
  6. Step 6: Final answer
    x = 11,986.80

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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.