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Finding the Fourth Proportional to 9,888.93, 13,650.18 and 6,114.99

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Solution

The fourth proportional to 9,888.93, 13,650.18 and 6,114.99 is: 8,440.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,888.93 : 13,650.18 = 6,114.99 : x
  2. Step 2: Convert to fraction form
    9,888.93/13,650.18 = 6,114.99/x
  3. Step 3: Cross multiply
    9,888.93x = 13,650.18 × 6,114.99
  4. Step 4: Simplify right side
    9,888.93x = 83,470,714.20
  5. Step 5: Solve for x
    x = 83,470,714.20/9,888.93
  6. Step 6: Final answer
    x = 8,440.82

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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.