Home / 20,700.90-31,056.03-9,015.30

Finding the Fourth Proportional to 20,700.90, 31,056.03 and 9,015.30

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Solution

The fourth proportional to 20,700.90, 31,056.03 and 9,015.30 is: 13,524.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,700.90 : 31,056.03 = 9,015.30 : x
  2. Step 2: Convert to fraction form
    20,700.90/31,056.03 = 9,015.30/x
  3. Step 3: Cross multiply
    20,700.90x = 31,056.03 × 9,015.30
  4. Step 4: Simplify right side
    20,700.90x = 279,979,427.26
  5. Step 5: Solve for x
    x = 279,979,427.26/20,700.90
  6. Step 6: Final answer
    x = 13,524.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.