Home / 20,988.72-31,348.26-19,010.16

Finding the Fourth Proportional to 20,988.72, 31,348.26 and 19,010.16

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Solution

The fourth proportional to 20,988.72, 31,348.26 and 19,010.16 is: 28,393.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,988.72 : 31,348.26 = 19,010.16 : x
  2. Step 2: Convert to fraction form
    20,988.72/31,348.26 = 19,010.16/x
  3. Step 3: Cross multiply
    20,988.72x = 31,348.26 × 19,010.16
  4. Step 4: Simplify right side
    20,988.72x = 595,935,438.32
  5. Step 5: Solve for x
    x = 595,935,438.32/20,988.72
  6. Step 6: Final answer
    x = 28,393.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.