Home / 39,081.96-58,623.12-12,430.80

Finding the Fourth Proportional to 39,081.96, 58,623.12 and 12,430.80

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Solution

The fourth proportional to 39,081.96, 58,623.12 and 12,430.80 is: 18,646.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,081.96 : 58,623.12 = 12,430.80 : x
  2. Step 2: Convert to fraction form
    39,081.96/58,623.12 = 12,430.80/x
  3. Step 3: Cross multiply
    39,081.96x = 58,623.12 × 12,430.80
  4. Step 4: Simplify right side
    39,081.96x = 728,732,280.10
  5. Step 5: Solve for x
    x = 728,732,280.10/39,081.96
  6. Step 6: Final answer
    x = 18,646.26

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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.