Home / 21,782.27-30,054.95-14,239.65

Finding the Fourth Proportional to 21,782.27, 30,054.95 and 14,239.65

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Solution

The fourth proportional to 21,782.27, 30,054.95 and 14,239.65 is: 19,647.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,782.27 : 30,054.95 = 14,239.65 : x
  2. Step 2: Convert to fraction form
    21,782.27/30,054.95 = 14,239.65/x
  3. Step 3: Cross multiply
    21,782.27x = 30,054.95 × 14,239.65
  4. Step 4: Simplify right side
    21,782.27x = 427,971,897.57
  5. Step 5: Solve for x
    x = 427,971,897.57/21,782.27
  6. Step 6: Final answer
    x = 19,647.72

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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.