Home / 28,430.48-42,651.18-8,709.21

Finding the Fourth Proportional to 28,430.48, 42,651.18 and 8,709.21

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Solution

The fourth proportional to 28,430.48, 42,651.18 and 8,709.21 is: 13,065.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,430.48 : 42,651.18 = 8,709.21 : x
  2. Step 2: Convert to fraction form
    28,430.48/42,651.18 = 8,709.21/x
  3. Step 3: Cross multiply
    28,430.48x = 42,651.18 × 8,709.21
  4. Step 4: Simplify right side
    28,430.48x = 371,458,083.37
  5. Step 5: Solve for x
    x = 371,458,083.37/28,430.48
  6. Step 6: Final answer
    x = 13,065.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.