Home / 13,365.36-18,444.04-7,776.40

Finding the Fourth Proportional to 13,365.36, 18,444.04 and 7,776.40

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Solution

The fourth proportional to 13,365.36, 18,444.04 and 7,776.40 is: 10,731.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,365.36 : 18,444.04 = 7,776.40 : x
  2. Step 2: Convert to fraction form
    13,365.36/18,444.04 = 7,776.40/x
  3. Step 3: Cross multiply
    13,365.36x = 18,444.04 × 7,776.40
  4. Step 4: Simplify right side
    13,365.36x = 143,428,232.66
  5. Step 5: Solve for x
    x = 143,428,232.66/13,365.36
  6. Step 6: Final answer
    x = 10,731.34

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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.