Home / 28,788.48-39,744.96-18,869.76

Finding the Fourth Proportional to 28,788.48, 39,744.96 and 18,869.76

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Solution

The fourth proportional to 28,788.48, 39,744.96 and 18,869.76 is: 26,051.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,788.48 : 39,744.96 = 18,869.76 : x
  2. Step 2: Convert to fraction form
    28,788.48/39,744.96 = 18,869.76/x
  3. Step 3: Cross multiply
    28,788.48x = 39,744.96 × 18,869.76
  4. Step 4: Simplify right side
    28,788.48x = 749,977,856.41
  5. Step 5: Solve for x
    x = 749,977,856.41/28,788.48
  6. Step 6: Final answer
    x = 26,051.32

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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.