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Finding the Fourth Proportional to 28,030.39, 42,045.74 and 7,253.89

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Solution

The fourth proportional to 28,030.39, 42,045.74 and 7,253.89 is: 10,880.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,030.39 : 42,045.74 = 7,253.89 : x
  2. Step 2: Convert to fraction form
    28,030.39/42,045.74 = 7,253.89/x
  3. Step 3: Cross multiply
    28,030.39x = 42,045.74 × 7,253.89
  4. Step 4: Simplify right side
    28,030.39x = 304,995,031.54
  5. Step 5: Solve for x
    x = 304,995,031.54/28,030.39
  6. Step 6: Final answer
    x = 10,880.87

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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.