Home / 15,436.50-21,307.83-9,148.89

Finding the Fourth Proportional to 15,436.50, 21,307.83 and 9,148.89

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Solution

The fourth proportional to 15,436.50, 21,307.83 and 9,148.89 is: 12,628.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,436.50 : 21,307.83 = 9,148.89 : x
  2. Step 2: Convert to fraction form
    15,436.50/21,307.83 = 9,148.89/x
  3. Step 3: Cross multiply
    15,436.50x = 21,307.83 × 9,148.89
  4. Step 4: Simplify right side
    15,436.50x = 194,942,992.81
  5. Step 5: Solve for x
    x = 194,942,992.81/15,436.50
  6. Step 6: Final answer
    x = 12,628.70

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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.