Home / 13,289.51-18,332.48-7,908.12

Finding the Fourth Proportional to 13,289.51, 18,332.48 and 7,908.12

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Solution

The fourth proportional to 13,289.51, 18,332.48 and 7,908.12 is: 10,909.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.51 : 18,332.48 = 7,908.12 : x
  2. Step 2: Convert to fraction form
    13,289.51/18,332.48 = 7,908.12/x
  3. Step 3: Cross multiply
    13,289.51x = 18,332.48 × 7,908.12
  4. Step 4: Simplify right side
    13,289.51x = 144,975,451.74
  5. Step 5: Solve for x
    x = 144,975,451.74/13,289.51
  6. Step 6: Final answer
    x = 10,909.01

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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.