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Finding the Fourth Proportional to 14,605.02, 20,154.91 and 7,890.63

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Solution

The fourth proportional to 14,605.02, 20,154.91 and 7,890.63 is: 10,889.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,605.02 : 20,154.91 = 7,890.63 : x
  2. Step 2: Convert to fraction form
    14,605.02/20,154.91 = 7,890.63/x
  3. Step 3: Cross multiply
    14,605.02x = 20,154.91 × 7,890.63
  4. Step 4: Simplify right side
    14,605.02x = 159,034,918.61
  5. Step 5: Solve for x
    x = 159,034,918.61/14,605.02
  6. Step 6: Final answer
    x = 10,889.06

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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.