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Finding the Fourth Proportional to 15,813.70, 23,701.35 and 7,039.30

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Solution

The fourth proportional to 15,813.70, 23,701.35 and 7,039.30 is: 10,550.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,813.70 : 23,701.35 = 7,039.30 : x
  2. Step 2: Convert to fraction form
    15,813.70/23,701.35 = 7,039.30/x
  3. Step 3: Cross multiply
    15,813.70x = 23,701.35 × 7,039.30
  4. Step 4: Simplify right side
    15,813.70x = 166,840,913.06
  5. Step 5: Solve for x
    x = 166,840,913.06/15,813.70
  6. Step 6: Final answer
    x = 10,550.40

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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.