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Finding the Fourth Proportional to 19,325.93, 28,987.95 and 11,325.16

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Solution

The fourth proportional to 19,325.93, 28,987.95 and 11,325.16 is: 16,987.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,325.93 : 28,987.95 = 11,325.16 : x
  2. Step 2: Convert to fraction form
    19,325.93/28,987.95 = 11,325.16/x
  3. Step 3: Cross multiply
    19,325.93x = 28,987.95 × 11,325.16
  4. Step 4: Simplify right side
    19,325.93x = 328,293,026.88
  5. Step 5: Solve for x
    x = 328,293,026.88/19,325.93
  6. Step 6: Final answer
    x = 16,987.18

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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.