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Finding the Fourth Proportional to 12,590.62, 18,870.13 and 11,026.91

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Solution

The fourth proportional to 12,590.62, 18,870.13 and 11,026.91 is: 16,526.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,590.62 : 18,870.13 = 11,026.91 : x
  2. Step 2: Convert to fraction form
    12,590.62/18,870.13 = 11,026.91/x
  3. Step 3: Cross multiply
    12,590.62x = 18,870.13 × 11,026.91
  4. Step 4: Simplify right side
    12,590.62x = 208,079,225.20
  5. Step 5: Solve for x
    x = 208,079,225.20/12,590.62
  6. Step 6: Final answer
    x = 16,526.53

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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.