Home / 12,688.30-19,020.93-4,902.94

Finding the Fourth Proportional to 12,688.30, 19,020.93 and 4,902.94

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Solution

The fourth proportional to 12,688.30, 19,020.93 and 4,902.94 is: 7,349.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,688.30 : 19,020.93 = 4,902.94 : x
  2. Step 2: Convert to fraction form
    12,688.30/19,020.93 = 4,902.94/x
  3. Step 3: Cross multiply
    12,688.30x = 19,020.93 × 4,902.94
  4. Step 4: Simplify right side
    12,688.30x = 93,258,478.53
  5. Step 5: Solve for x
    x = 93,258,478.53/12,688.30
  6. Step 6: Final answer
    x = 7,349.96

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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.