Home / 21,947.36-30,275.98-13,975.74

Finding the Fourth Proportional to 21,947.36, 30,275.98 and 13,975.74

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Solution

The fourth proportional to 21,947.36, 30,275.98 and 13,975.74 is: 19,279.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,947.36 : 30,275.98 = 13,975.74 : x
  2. Step 2: Convert to fraction form
    21,947.36/30,275.98 = 13,975.74/x
  3. Step 3: Cross multiply
    21,947.36x = 30,275.98 × 13,975.74
  4. Step 4: Simplify right side
    21,947.36x = 423,129,189.79
  5. Step 5: Solve for x
    x = 423,129,189.79/21,947.36
  6. Step 6: Final answer
    x = 19,279.28

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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.