Home / 13,971.36-19,280.40-7,683.36

Finding the Fourth Proportional to 13,971.36, 19,280.40 and 7,683.36

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Solution

The fourth proportional to 13,971.36, 19,280.40 and 7,683.36 is: 10,602.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,971.36 : 19,280.40 = 7,683.36 : x
  2. Step 2: Convert to fraction form
    13,971.36/19,280.40 = 7,683.36/x
  3. Step 3: Cross multiply
    13,971.36x = 19,280.40 × 7,683.36
  4. Step 4: Simplify right side
    13,971.36x = 148,138,254.14
  5. Step 5: Solve for x
    x = 148,138,254.14/13,971.36
  6. Step 6: Final answer
    x = 10,602.99

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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.