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Finding the Fourth Proportional to 18,807, 25,953.80 and 10,423.50

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Solution

The fourth proportional to 18,807, 25,953.80 and 10,423.50 is: 14,384.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,807 : 25,953.80 = 10,423.50 : x
  2. Step 2: Convert to fraction form
    18,807/25,953.80 = 10,423.50/x
  3. Step 3: Cross multiply
    18,807x = 25,953.80 × 10,423.50
  4. Step 4: Simplify right side
    18,807x = 270,529,382.18
  5. Step 5: Solve for x
    x = 270,529,382.18/18,807
  6. Step 6: Final answer
    x = 14,384.50

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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.