Home / 28,020.32-42,031.36-10,486.80

Finding the Fourth Proportional to 28,020.32, 42,031.36 and 10,486.80

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Solution

The fourth proportional to 28,020.32, 42,031.36 and 10,486.80 is: 15,730.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,020.32 : 42,031.36 = 10,486.80 : x
  2. Step 2: Convert to fraction form
    28,020.32/42,031.36 = 10,486.80/x
  3. Step 3: Cross multiply
    28,020.32x = 42,031.36 × 10,486.80
  4. Step 4: Simplify right side
    28,020.32x = 440,774,466.05
  5. Step 5: Solve for x
    x = 440,774,466.05/28,020.32
  6. Step 6: Final answer
    x = 15,730.53

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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.