Home / 25,583.55-35,307.80-15,519.09

Finding the Fourth Proportional to 25,583.55, 35,307.80 and 15,519.09

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Solution

The fourth proportional to 25,583.55, 35,307.80 and 15,519.09 is: 21,417.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,583.55 : 35,307.80 = 15,519.09 : x
  2. Step 2: Convert to fraction form
    25,583.55/35,307.80 = 15,519.09/x
  3. Step 3: Cross multiply
    25,583.55x = 35,307.80 × 15,519.09
  4. Step 4: Simplify right side
    25,583.55x = 547,945,038.91
  5. Step 5: Solve for x
    x = 547,945,038.91/25,583.55
  6. Step 6: Final answer
    x = 21,417.87

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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.