Home / 15,395.76-21,246.24-8,681.52

Finding the Fourth Proportional to 15,395.76, 21,246.24 and 8,681.52

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Solution

The fourth proportional to 15,395.76, 21,246.24 and 8,681.52 is: 11,980.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,395.76 : 21,246.24 = 8,681.52 : x
  2. Step 2: Convert to fraction form
    15,395.76/21,246.24 = 8,681.52/x
  3. Step 3: Cross multiply
    15,395.76x = 21,246.24 × 8,681.52
  4. Step 4: Simplify right side
    15,395.76x = 184,449,657.48
  5. Step 5: Solve for x
    x = 184,449,657.48/15,395.76
  6. Step 6: Final answer
    x = 11,980.55

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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.