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Finding the Fourth Proportional to 28,297.61, 42,446.36 and 7,521.11

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Solution

The fourth proportional to 28,297.61, 42,446.36 and 7,521.11 is: 11,281.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,297.61 : 42,446.36 = 7,521.11 : x
  2. Step 2: Convert to fraction form
    28,297.61/42,446.36 = 7,521.11/x
  3. Step 3: Cross multiply
    28,297.61x = 42,446.36 × 7,521.11
  4. Step 4: Simplify right side
    28,297.61x = 319,243,549.23
  5. Step 5: Solve for x
    x = 319,243,549.23/28,297.61
  6. Step 6: Final answer
    x = 11,281.65

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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.