Home / 10,519.50-15,784.65-5,325.51

Finding the Fourth Proportional to 10,519.50, 15,784.65 and 5,325.51

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Solution

The fourth proportional to 10,519.50, 15,784.65 and 5,325.51 is: 7,991.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,519.50 : 15,784.65 = 5,325.51 : x
  2. Step 2: Convert to fraction form
    10,519.50/15,784.65 = 5,325.51/x
  3. Step 3: Cross multiply
    10,519.50x = 15,784.65 × 5,325.51
  4. Step 4: Simplify right side
    10,519.50x = 84,061,311.42
  5. Step 5: Solve for x
    x = 84,061,311.42/10,519.50
  6. Step 6: Final answer
    x = 7,991.00

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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.