Home / 15,054.65-20,778.90-10,019.09

Finding the Fourth Proportional to 15,054.65, 20,778.90 and 10,019.09

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Solution

The fourth proportional to 15,054.65, 20,778.90 and 10,019.09 is: 13,828.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,054.65 : 20,778.90 = 10,019.09 : x
  2. Step 2: Convert to fraction form
    15,054.65/20,778.90 = 10,019.09/x
  3. Step 3: Cross multiply
    15,054.65x = 20,778.90 × 10,019.09
  4. Step 4: Simplify right side
    15,054.65x = 208,185,669.20
  5. Step 5: Solve for x
    x = 208,185,669.20/15,054.65
  6. Step 6: Final answer
    x = 13,828.66

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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.