Home / 19,139.02-28,710.69-8,749.42

Finding the Fourth Proportional to 19,139.02, 28,710.69 and 8,749.42

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Solution

The fourth proportional to 19,139.02, 28,710.69 and 8,749.42 is: 13,125.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,139.02 : 28,710.69 = 8,749.42 : x
  2. Step 2: Convert to fraction form
    19,139.02/28,710.69 = 8,749.42/x
  3. Step 3: Cross multiply
    19,139.02x = 28,710.69 × 8,749.42
  4. Step 4: Simplify right side
    19,139.02x = 251,201,885.30
  5. Step 5: Solve for x
    x = 251,201,885.30/19,139.02
  6. Step 6: Final answer
    x = 13,125.12

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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.