Home / 18,980.20-26,215.93-14,221.43

Finding the Fourth Proportional to 18,980.20, 26,215.93 and 14,221.43

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Solution

The fourth proportional to 18,980.20, 26,215.93 and 14,221.43 is: 19,643.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,980.20 : 26,215.93 = 14,221.43 : x
  2. Step 2: Convert to fraction form
    18,980.20/26,215.93 = 14,221.43/x
  3. Step 3: Cross multiply
    18,980.20x = 26,215.93 × 14,221.43
  4. Step 4: Simplify right side
    18,980.20x = 372,828,013.38
  5. Step 5: Solve for x
    x = 372,828,013.38/18,980.20
  6. Step 6: Final answer
    x = 19,643.00

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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.