Home / 13,715.98-18,931.25-9,738.34

Finding the Fourth Proportional to 13,715.98, 18,931.25 and 9,738.34

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Solution

The fourth proportional to 13,715.98, 18,931.25 and 9,738.34 is: 13,441.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,715.98 : 18,931.25 = 9,738.34 : x
  2. Step 2: Convert to fraction form
    13,715.98/18,931.25 = 9,738.34/x
  3. Step 3: Cross multiply
    13,715.98x = 18,931.25 × 9,738.34
  4. Step 4: Simplify right side
    13,715.98x = 184,358,949.13
  5. Step 5: Solve for x
    x = 184,358,949.13/13,715.98
  6. Step 6: Final answer
    x = 13,441.18

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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.