Home / 19,209.96-26,509.86-12,139.56

Finding the Fourth Proportional to 19,209.96, 26,509.86 and 12,139.56

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Solution

The fourth proportional to 19,209.96, 26,509.86 and 12,139.56 is: 16,752.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,209.96 : 26,509.86 = 12,139.56 : x
  2. Step 2: Convert to fraction form
    19,209.96/26,509.86 = 12,139.56/x
  3. Step 3: Cross multiply
    19,209.96x = 26,509.86 × 12,139.56
  4. Step 4: Simplify right side
    19,209.96x = 321,818,036.06
  5. Step 5: Solve for x
    x = 321,818,036.06/19,209.96
  6. Step 6: Final answer
    x = 16,752.67

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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.