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Finding the Fourth Proportional to 18,578.93, 25,643.93 and 11,501.42

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Solution

The fourth proportional to 18,578.93, 25,643.93 and 11,501.42 is: 15,875.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,578.93 : 25,643.93 = 11,501.42 : x
  2. Step 2: Convert to fraction form
    18,578.93/25,643.93 = 11,501.42/x
  3. Step 3: Cross multiply
    18,578.93x = 25,643.93 × 11,501.42
  4. Step 4: Simplify right side
    18,578.93x = 294,941,423.65
  5. Step 5: Solve for x
    x = 294,941,423.65/18,578.93
  6. Step 6: Final answer
    x = 15,875.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.