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Finding the Fourth Proportional to 18,868.48, 28,259.58 and 9,014.68

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Solution

The fourth proportional to 18,868.48, 28,259.58 and 9,014.68 is: 13,501.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,868.48 : 28,259.58 = 9,014.68 : x
  2. Step 2: Convert to fraction form
    18,868.48/28,259.58 = 9,014.68/x
  3. Step 3: Cross multiply
    18,868.48x = 28,259.58 × 9,014.68
  4. Step 4: Simplify right side
    18,868.48x = 254,751,070.63
  5. Step 5: Solve for x
    x = 254,751,070.63/18,868.48
  6. Step 6: Final answer
    x = 13,501.41

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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.