Home / 14,274.08-19,699.28-7,986.40

Finding the Fourth Proportional to 14,274.08, 19,699.28 and 7,986.40

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Solution

The fourth proportional to 14,274.08, 19,699.28 and 7,986.40 is: 11,021.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,274.08 : 19,699.28 = 7,986.40 : x
  2. Step 2: Convert to fraction form
    14,274.08/19,699.28 = 7,986.40/x
  3. Step 3: Cross multiply
    14,274.08x = 19,699.28 × 7,986.40
  4. Step 4: Simplify right side
    14,274.08x = 157,326,329.79
  5. Step 5: Solve for x
    x = 157,326,329.79/14,274.08
  6. Step 6: Final answer
    x = 11,021.82

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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.