Home / 13,971.81-19,280.61-7,684.14

Finding the Fourth Proportional to 13,971.81, 19,280.61 and 7,684.14

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Solution

The fourth proportional to 13,971.81, 19,280.61 and 7,684.14 is: 10,603.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,971.81 : 19,280.61 = 7,684.14 : x
  2. Step 2: Convert to fraction form
    13,971.81/19,280.61 = 7,684.14/x
  3. Step 3: Cross multiply
    13,971.81x = 19,280.61 × 7,684.14
  4. Step 4: Simplify right side
    13,971.81x = 148,154,906.53
  5. Step 5: Solve for x
    x = 148,154,906.53/13,971.81
  6. Step 6: Final answer
    x = 10,603.84

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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.