Home / 19,120.39-26,417.81-15,117.84

Finding the Fourth Proportional to 19,120.39, 26,417.81 and 15,117.84

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Solution

The fourth proportional to 19,120.39, 26,417.81 and 15,117.84 is: 20,887.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,120.39 : 26,417.81 = 15,117.84 : x
  2. Step 2: Convert to fraction form
    19,120.39/26,417.81 = 15,117.84/x
  3. Step 3: Cross multiply
    19,120.39x = 26,417.81 × 15,117.84
  4. Step 4: Simplify right side
    19,120.39x = 399,380,262.53
  5. Step 5: Solve for x
    x = 399,380,262.53/19,120.39
  6. Step 6: Final answer
    x = 20,887.67

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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.