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Finding the Fourth Proportional to 14,804.47, 20,420.53 and 9,490.87

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Solution

The fourth proportional to 14,804.47, 20,420.53 and 9,490.87 is: 13,091.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,804.47 : 20,420.53 = 9,490.87 : x
  2. Step 2: Convert to fraction form
    14,804.47/20,420.53 = 9,490.87/x
  3. Step 3: Cross multiply
    14,804.47x = 20,420.53 × 9,490.87
  4. Step 4: Simplify right side
    14,804.47x = 193,808,595.56
  5. Step 5: Solve for x
    x = 193,808,595.56/14,804.47
  6. Step 6: Final answer
    x = 13,091.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.