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Finding the Fourth Proportional to 19,038.47, 28,564.47 and 8,507.53

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Solution

The fourth proportional to 19,038.47, 28,564.47 and 8,507.53 is: 12,764.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,038.47 : 28,564.47 = 8,507.53 : x
  2. Step 2: Convert to fraction form
    19,038.47/28,564.47 = 8,507.53/x
  3. Step 3: Cross multiply
    19,038.47x = 28,564.47 × 8,507.53
  4. Step 4: Simplify right side
    19,038.47x = 243,013,014.05
  5. Step 5: Solve for x
    x = 243,013,014.05/19,038.47
  6. Step 6: Final answer
    x = 12,764.31

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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.