Home / 21,828.95-30,100.10-14,743.07

Finding the Fourth Proportional to 21,828.95, 30,100.10 and 14,743.07

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Solution

The fourth proportional to 21,828.95, 30,100.10 and 14,743.07 is: 20,329.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,828.95 : 30,100.10 = 14,743.07 : x
  2. Step 2: Convert to fraction form
    21,828.95/30,100.10 = 14,743.07/x
  3. Step 3: Cross multiply
    21,828.95x = 30,100.10 × 14,743.07
  4. Step 4: Simplify right side
    21,828.95x = 443,767,657.09
  5. Step 5: Solve for x
    x = 443,767,657.09/21,828.95
  6. Step 6: Final answer
    x = 20,329.32

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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.