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Finding the Fourth Proportional to 19,358.72, 29,038.08 and 5,507.72

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Solution

The fourth proportional to 19,358.72, 29,038.08 and 5,507.72 is: 8,261.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,358.72 : 29,038.08 = 5,507.72 : x
  2. Step 2: Convert to fraction form
    19,358.72/29,038.08 = 5,507.72/x
  3. Step 3: Cross multiply
    19,358.72x = 29,038.08 × 5,507.72
  4. Step 4: Simplify right side
    19,358.72x = 159,933,686.57
  5. Step 5: Solve for x
    x = 159,933,686.57/19,358.72
  6. Step 6: Final answer
    x = 8,261.58

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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.