Home / 13,978.24-19,290.47-8,011.07

Finding the Fourth Proportional to 13,978.24, 19,290.47 and 8,011.07

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Solution

The fourth proportional to 13,978.24, 19,290.47 and 8,011.07 is: 11,055.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,978.24 : 19,290.47 = 8,011.07 : x
  2. Step 2: Convert to fraction form
    13,978.24/19,290.47 = 8,011.07/x
  3. Step 3: Cross multiply
    13,978.24x = 19,290.47 × 8,011.07
  4. Step 4: Simplify right side
    13,978.24x = 154,537,229.08
  5. Step 5: Solve for x
    x = 154,537,229.08/13,978.24
  6. Step 6: Final answer
    x = 11,055.56

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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.