Home / 39,210.56-58,821.60-12,918.08

Finding the Fourth Proportional to 39,210.56, 58,821.60 and 12,918.08

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Solution

The fourth proportional to 39,210.56, 58,821.60 and 12,918.08 is: 19,379.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,210.56 : 58,821.60 = 12,918.08 : x
  2. Step 2: Convert to fraction form
    39,210.56/58,821.60 = 12,918.08/x
  3. Step 3: Cross multiply
    39,210.56x = 58,821.60 × 12,918.08
  4. Step 4: Simplify right side
    39,210.56x = 759,862,134.53
  5. Step 5: Solve for x
    x = 759,862,134.53/39,210.56
  6. Step 6: Final answer
    x = 19,379.02

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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.