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Finding the Fourth Proportional to 13,030.79, 19,557.12 and 5,640.89

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Solution

The fourth proportional to 13,030.79, 19,557.12 and 5,640.89 is: 8,466.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,030.79 : 19,557.12 = 5,640.89 : x
  2. Step 2: Convert to fraction form
    13,030.79/19,557.12 = 5,640.89/x
  3. Step 3: Cross multiply
    13,030.79x = 19,557.12 × 5,640.89
  4. Step 4: Simplify right side
    13,030.79x = 110,319,464.85
  5. Step 5: Solve for x
    x = 110,319,464.85/13,030.79
  6. Step 6: Final answer
    x = 8,466.06

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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.