Home / 15,396.20-21,246.33-8,681.77

Finding the Fourth Proportional to 15,396.20, 21,246.33 and 8,681.77

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Solution

The fourth proportional to 15,396.20, 21,246.33 and 8,681.77 is: 11,980.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,396.20 : 21,246.33 = 8,681.77 : x
  2. Step 2: Convert to fraction form
    15,396.20/21,246.33 = 8,681.77/x
  3. Step 3: Cross multiply
    15,396.20x = 21,246.33 × 8,681.77
  4. Step 4: Simplify right side
    15,396.20x = 184,455,750.40
  5. Step 5: Solve for x
    x = 184,455,750.40/15,396.20
  6. Step 6: Final answer
    x = 11,980.60

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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.