Home / 14,490.29-19,995.59-8,115.80

Finding the Fourth Proportional to 14,490.29, 19,995.59 and 8,115.80

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Solution

The fourth proportional to 14,490.29, 19,995.59 and 8,115.80 is: 11,199.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,490.29 : 19,995.59 = 8,115.80 : x
  2. Step 2: Convert to fraction form
    14,490.29/19,995.59 = 8,115.80/x
  3. Step 3: Cross multiply
    14,490.29x = 19,995.59 × 8,115.80
  4. Step 4: Simplify right side
    14,490.29x = 162,280,129.63
  5. Step 5: Solve for x
    x = 162,280,129.63/14,490.29
  6. Step 6: Final answer
    x = 11,199.23

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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.