Home / 28,063.86-38,681.68-19,876.84

Finding the Fourth Proportional to 28,063.86, 38,681.68 and 19,876.84

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Solution

The fourth proportional to 28,063.86, 38,681.68 and 19,876.84 is: 27,397.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,063.86 : 38,681.68 = 19,876.84 : x
  2. Step 2: Convert to fraction form
    28,063.86/38,681.68 = 19,876.84/x
  3. Step 3: Cross multiply
    28,063.86x = 38,681.68 × 19,876.84
  4. Step 4: Simplify right side
    28,063.86x = 768,869,564.29
  5. Step 5: Solve for x
    x = 768,869,564.29/28,063.86
  6. Step 6: Final answer
    x = 27,397.14

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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.