Home / 15,036.51-20,749.63-8,230.35

Finding the Fourth Proportional to 15,036.51, 20,749.63 and 8,230.35

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Solution

The fourth proportional to 15,036.51, 20,749.63 and 8,230.35 is: 11,357.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,036.51 : 20,749.63 = 8,230.35 : x
  2. Step 2: Convert to fraction form
    15,036.51/20,749.63 = 8,230.35/x
  3. Step 3: Cross multiply
    15,036.51x = 20,749.63 × 8,230.35
  4. Step 4: Simplify right side
    15,036.51x = 170,776,717.27
  5. Step 5: Solve for x
    x = 170,776,717.27/15,036.51
  6. Step 6: Final answer
    x = 11,357.47

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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.