Home / 21,947.65-30,279.60-14,398.18

Finding the Fourth Proportional to 21,947.65, 30,279.60 and 14,398.18

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Solution

The fourth proportional to 21,947.65, 30,279.60 and 14,398.18 is: 19,864.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,947.65 : 30,279.60 = 14,398.18 : x
  2. Step 2: Convert to fraction form
    21,947.65/30,279.60 = 14,398.18/x
  3. Step 3: Cross multiply
    21,947.65x = 30,279.60 × 14,398.18
  4. Step 4: Simplify right side
    21,947.65x = 435,971,055.43
  5. Step 5: Solve for x
    x = 435,971,055.43/21,947.65
  6. Step 6: Final answer
    x = 19,864.14

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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.