Home / 28,020.45-42,030.71-9,295.55

Finding the Fourth Proportional to 28,020.45, 42,030.71 and 9,295.55

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Solution

The fourth proportional to 28,020.45, 42,030.71 and 9,295.55 is: 13,943.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,020.45 : 42,030.71 = 9,295.55 : x
  2. Step 2: Convert to fraction form
    28,020.45/42,030.71 = 9,295.55/x
  3. Step 3: Cross multiply
    28,020.45x = 42,030.71 × 9,295.55
  4. Step 4: Simplify right side
    28,020.45x = 390,698,566.34
  5. Step 5: Solve for x
    x = 390,698,566.34/28,020.45
  6. Step 6: Final answer
    x = 13,943.34

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Similar ratio
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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.