Home / 13,130.57-19,719.35-12,602.05

Finding the Fourth Proportional to 13,130.57, 19,719.35 and 12,602.05

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Solution

The fourth proportional to 13,130.57, 19,719.35 and 12,602.05 is: 18,925.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,130.57 : 19,719.35 = 12,602.05 : x
  2. Step 2: Convert to fraction form
    13,130.57/19,719.35 = 12,602.05/x
  3. Step 3: Cross multiply
    13,130.57x = 19,719.35 × 12,602.05
  4. Step 4: Simplify right side
    13,130.57x = 248,504,234.67
  5. Step 5: Solve for x
    x = 248,504,234.67/13,130.57
  6. Step 6: Final answer
    x = 18,925.62

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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.