Home / 19,320.40-26,658.64-11,364.20

Finding the Fourth Proportional to 19,320.40, 26,658.64 and 11,364.20

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Solution

The fourth proportional to 19,320.40, 26,658.64 and 11,364.20 is: 15,680.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,320.40 : 26,658.64 = 11,364.20 : x
  2. Step 2: Convert to fraction form
    19,320.40/26,658.64 = 11,364.20/x
  3. Step 3: Cross multiply
    19,320.40x = 26,658.64 × 11,364.20
  4. Step 4: Simplify right side
    19,320.40x = 302,954,116.69
  5. Step 5: Solve for x
    x = 302,954,116.69/19,320.40
  6. Step 6: Final answer
    x = 15,680.53

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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.