Home / 19,878.70-27,432.54-10,926.76

Finding the Fourth Proportional to 19,878.70, 27,432.54 and 10,926.76

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Solution

The fourth proportional to 19,878.70, 27,432.54 and 10,926.76 is: 15,078.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878.70 : 27,432.54 = 10,926.76 : x
  2. Step 2: Convert to fraction form
    19,878.70/27,432.54 = 10,926.76/x
  3. Step 3: Cross multiply
    19,878.70x = 27,432.54 × 10,926.76
  4. Step 4: Simplify right side
    19,878.70x = 299,748,780.77
  5. Step 5: Solve for x
    x = 299,748,780.77/19,878.70
  6. Step 6: Final answer
    x = 15,078.89

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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.