Home / 12,780.06-19,148.63-9,644.28

Finding the Fourth Proportional to 12,780.06, 19,148.63 and 9,644.28

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Solution

The fourth proportional to 12,780.06, 19,148.63 and 9,644.28 is: 14,450.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780.06 : 19,148.63 = 9,644.28 : x
  2. Step 2: Convert to fraction form
    12,780.06/19,148.63 = 9,644.28/x
  3. Step 3: Cross multiply
    12,780.06x = 19,148.63 × 9,644.28
  4. Step 4: Simplify right side
    12,780.06x = 184,674,701.12
  5. Step 5: Solve for x
    x = 184,674,701.12/12,780.06
  6. Step 6: Final answer
    x = 14,450.22

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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.