Home / 15,396.32-21,246.50-8,681.90

Finding the Fourth Proportional to 15,396.32, 21,246.50 and 8,681.90

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Solution

The fourth proportional to 15,396.32, 21,246.50 and 8,681.90 is: 11,980.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,396.32 : 21,246.50 = 8,681.90 : x
  2. Step 2: Convert to fraction form
    15,396.32/21,246.50 = 8,681.90/x
  3. Step 3: Cross multiply
    15,396.32x = 21,246.50 × 8,681.90
  4. Step 4: Simplify right side
    15,396.32x = 184,459,903.82
  5. Step 5: Solve for x
    x = 184,459,903.82/15,396.32
  6. Step 6: Final answer
    x = 11,980.78

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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.