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Finding the Fourth Proportional to 28,001.63, 42,001.35 and 6,941.72

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Solution

The fourth proportional to 28,001.63, 42,001.35 and 6,941.72 is: 10,412.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,001.63 : 42,001.35 = 6,941.72 : x
  2. Step 2: Convert to fraction form
    28,001.63/42,001.35 = 6,941.72/x
  3. Step 3: Cross multiply
    28,001.63x = 42,001.35 × 6,941.72
  4. Step 4: Simplify right side
    28,001.63x = 291,561,401.32
  5. Step 5: Solve for x
    x = 291,561,401.32/28,001.63
  6. Step 6: Final answer
    x = 10,412.30

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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.