Home / 13,285.47-19,904.70-12,495.25

Finding the Fourth Proportional to 13,285.47, 19,904.70 and 12,495.25

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Solution

The fourth proportional to 13,285.47, 19,904.70 and 12,495.25 is: 18,720.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,285.47 : 19,904.70 = 12,495.25 : x
  2. Step 2: Convert to fraction form
    13,285.47/19,904.70 = 12,495.25/x
  3. Step 3: Cross multiply
    13,285.47x = 19,904.70 × 12,495.25
  4. Step 4: Simplify right side
    13,285.47x = 248,714,162.45
  5. Step 5: Solve for x
    x = 248,714,162.45/13,285.47
  6. Step 6: Final answer
    x = 18,720.77

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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.