Home / 12,899.76-19,348.53-9,135.99

Finding the Fourth Proportional to 12,899.76, 19,348.53 and 9,135.99

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Solution

The fourth proportional to 12,899.76, 19,348.53 and 9,135.99 is: 13,703.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,899.76 : 19,348.53 = 9,135.99 : x
  2. Step 2: Convert to fraction form
    12,899.76/19,348.53 = 9,135.99/x
  3. Step 3: Cross multiply
    12,899.76x = 19,348.53 × 9,135.99
  4. Step 4: Simplify right side
    12,899.76x = 176,767,976.59
  5. Step 5: Solve for x
    x = 176,767,976.59/12,899.76
  6. Step 6: Final answer
    x = 13,703.20

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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.