Home / 12,947.70-19,421.57-5,547.36

Finding the Fourth Proportional to 12,947.70, 19,421.57 and 5,547.36

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Solution

The fourth proportional to 12,947.70, 19,421.57 and 5,547.36 is: 8,321.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,947.70 : 19,421.57 = 5,547.36 : x
  2. Step 2: Convert to fraction form
    12,947.70/19,421.57 = 5,547.36/x
  3. Step 3: Cross multiply
    12,947.70x = 19,421.57 × 5,547.36
  4. Step 4: Simplify right side
    12,947.70x = 107,738,440.56
  5. Step 5: Solve for x
    x = 107,738,440.56/12,947.70
  6. Step 6: Final answer
    x = 8,321.05

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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.