Home / 20,255.16-30,152.30-19,300.92

Finding the Fourth Proportional to 20,255.16, 30,152.30 and 19,300.92

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Solution

The fourth proportional to 20,255.16, 30,152.30 and 19,300.92 is: 28,731.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,255.16 : 30,152.30 = 19,300.92 : x
  2. Step 2: Convert to fraction form
    20,255.16/30,152.30 = 19,300.92/x
  3. Step 3: Cross multiply
    20,255.16x = 30,152.30 × 19,300.92
  4. Step 4: Simplify right side
    20,255.16x = 581,967,130.12
  5. Step 5: Solve for x
    x = 581,967,130.12/20,255.16
  6. Step 6: Final answer
    x = 28,731.80

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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.