Home / 15,580.64-21,500.27-8,507.04

Finding the Fourth Proportional to 15,580.64, 21,500.27 and 8,507.04

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Solution

The fourth proportional to 15,580.64, 21,500.27 and 8,507.04 is: 11,739.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,580.64 : 21,500.27 = 8,507.04 : x
  2. Step 2: Convert to fraction form
    15,580.64/21,500.27 = 8,507.04/x
  3. Step 3: Cross multiply
    15,580.64x = 21,500.27 × 8,507.04
  4. Step 4: Simplify right side
    15,580.64x = 182,903,656.90
  5. Step 5: Solve for x
    x = 182,903,656.90/15,580.64
  6. Step 6: Final answer
    x = 11,739.17

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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.