Home / 13,787.49-19,030.81-8,124.07

Finding the Fourth Proportional to 13,787.49, 19,030.81 and 8,124.07

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Solution

The fourth proportional to 13,787.49, 19,030.81 and 8,124.07 is: 11,213.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,787.49 : 19,030.81 = 8,124.07 : x
  2. Step 2: Convert to fraction form
    13,787.49/19,030.81 = 8,124.07/x
  3. Step 3: Cross multiply
    13,787.49x = 19,030.81 × 8,124.07
  4. Step 4: Simplify right side
    13,787.49x = 154,607,632.60
  5. Step 5: Solve for x
    x = 154,607,632.60/13,787.49
  6. Step 6: Final answer
    x = 11,213.62

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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.