Home / 26,421.14-39,631.31-6,430.78

Finding the Fourth Proportional to 26,421.14, 39,631.31 and 6,430.78

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Solution

The fourth proportional to 26,421.14, 39,631.31 and 6,430.78 is: 9,646.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,421.14 : 39,631.31 = 6,430.78 : x
  2. Step 2: Convert to fraction form
    26,421.14/39,631.31 = 6,430.78/x
  3. Step 3: Cross multiply
    26,421.14x = 39,631.31 × 6,430.78
  4. Step 4: Simplify right side
    26,421.14x = 254,860,235.72
  5. Step 5: Solve for x
    x = 254,860,235.72/26,421.14
  6. Step 6: Final answer
    x = 9,646.07

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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.