Home / 13,151.77-18,148.75-7,182.28

Finding the Fourth Proportional to 13,151.77, 18,148.75 and 7,182.28

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Solution

The fourth proportional to 13,151.77, 18,148.75 and 7,182.28 is: 9,911.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.77 : 18,148.75 = 7,182.28 : x
  2. Step 2: Convert to fraction form
    13,151.77/18,148.75 = 7,182.28/x
  3. Step 3: Cross multiply
    13,151.77x = 18,148.75 × 7,182.28
  4. Step 4: Simplify right side
    13,151.77x = 130,349,404.15
  5. Step 5: Solve for x
    x = 130,349,404.15/13,151.77
  6. Step 6: Final answer
    x = 9,911.17

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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.