Home / 21,020.63-31,444.79-19,173.29

Finding the Fourth Proportional to 21,020.63, 31,444.79 and 19,173.29

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Solution

The fourth proportional to 21,020.63, 31,444.79 and 19,173.29 is: 28,681.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.63 : 31,444.79 = 19,173.29 : x
  2. Step 2: Convert to fraction form
    21,020.63/31,444.79 = 19,173.29/x
  3. Step 3: Cross multiply
    21,020.63x = 31,444.79 × 19,173.29
  4. Step 4: Simplify right side
    21,020.63x = 602,899,824.57
  5. Step 5: Solve for x
    x = 602,899,824.57/21,020.63
  6. Step 6: Final answer
    x = 28,681.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.