Home / 14,036.40-19,379.52-8,739

Finding the Fourth Proportional to 14,036.40, 19,379.52 and 8,739

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Solution

The fourth proportional to 14,036.40, 19,379.52 and 8,739 is: 12,065.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,036.40 : 19,379.52 = 8,739 : x
  2. Step 2: Convert to fraction form
    14,036.40/19,379.52 = 8,739/x
  3. Step 3: Cross multiply
    14,036.40x = 19,379.52 × 8,739
  4. Step 4: Simplify right side
    14,036.40x = 169,357,625.28
  5. Step 5: Solve for x
    x = 169,357,625.28/14,036.40
  6. Step 6: Final answer
    x = 12,065.60

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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.