Home / 13,783.89-19,015.63-9,185.70

Finding the Fourth Proportional to 13,783.89, 19,015.63 and 9,185.70

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Solution

The fourth proportional to 13,783.89, 19,015.63 and 9,185.70 is: 12,672.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,783.89 : 19,015.63 = 9,185.70 : x
  2. Step 2: Convert to fraction form
    13,783.89/19,015.63 = 9,185.70/x
  3. Step 3: Cross multiply
    13,783.89x = 19,015.63 × 9,185.70
  4. Step 4: Simplify right side
    13,783.89x = 174,671,849.53
  5. Step 5: Solve for x
    x = 174,671,849.53/13,783.89
  6. Step 6: Final answer
    x = 12,672.17

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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.