Home / 13,313.76-18,355.93-10,915.04

Finding the Fourth Proportional to 13,313.76, 18,355.93 and 10,915.04

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Solution

The fourth proportional to 13,313.76, 18,355.93 and 10,915.04 is: 15,048.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,313.76 : 18,355.93 = 10,915.04 : x
  2. Step 2: Convert to fraction form
    13,313.76/18,355.93 = 10,915.04/x
  3. Step 3: Cross multiply
    13,313.76x = 18,355.93 × 10,915.04
  4. Step 4: Simplify right side
    13,313.76x = 200,355,710.19
  5. Step 5: Solve for x
    x = 200,355,710.19/13,313.76
  6. Step 6: Final answer
    x = 15,048.77

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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.