Home / 14,269.09-19,690.28-7,980.25

Finding the Fourth Proportional to 14,269.09, 19,690.28 and 7,980.25

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Solution

The fourth proportional to 14,269.09, 19,690.28 and 7,980.25 is: 11,012.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,269.09 : 19,690.28 = 7,980.25 : x
  2. Step 2: Convert to fraction form
    14,269.09/19,690.28 = 7,980.25/x
  3. Step 3: Cross multiply
    14,269.09x = 19,690.28 × 7,980.25
  4. Step 4: Simplify right side
    14,269.09x = 157,133,317.07
  5. Step 5: Solve for x
    x = 157,133,317.07/14,269.09
  6. Step 6: Final answer
    x = 11,012.15

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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.