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Finding the Fourth Proportional to 10,400.72, 15,601.10 and 8,973.72

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Solution

The fourth proportional to 10,400.72, 15,601.10 and 8,973.72 is: 13,460.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,400.72 : 15,601.10 = 8,973.72 : x
  2. Step 2: Convert to fraction form
    10,400.72/15,601.10 = 8,973.72/x
  3. Step 3: Cross multiply
    10,400.72x = 15,601.10 × 8,973.72
  4. Step 4: Simplify right side
    10,400.72x = 139,999,858.22
  5. Step 5: Solve for x
    x = 139,999,858.22/10,400.72
  6. Step 6: Final answer
    x = 13,460.60

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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.