Home / 12,709.30-19,064.35-4,389.70

Finding the Fourth Proportional to 12,709.30, 19,064.35 and 4,389.70

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Solution

The fourth proportional to 12,709.30, 19,064.35 and 4,389.70 is: 6,584.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,709.30 : 19,064.35 = 4,389.70 : x
  2. Step 2: Convert to fraction form
    12,709.30/19,064.35 = 4,389.70/x
  3. Step 3: Cross multiply
    12,709.30x = 19,064.35 × 4,389.70
  4. Step 4: Simplify right side
    12,709.30x = 83,686,777.20
  5. Step 5: Solve for x
    x = 83,686,777.20/12,709.30
  6. Step 6: Final answer
    x = 6,584.69

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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.