Home / 20,721.74-28,586.16-14,009.67

Finding the Fourth Proportional to 20,721.74, 28,586.16 and 14,009.67

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Solution

The fourth proportional to 20,721.74, 28,586.16 and 14,009.67 is: 19,326.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,721.74 : 28,586.16 = 14,009.67 : x
  2. Step 2: Convert to fraction form
    20,721.74/28,586.16 = 14,009.67/x
  3. Step 3: Cross multiply
    20,721.74x = 28,586.16 × 14,009.67
  4. Step 4: Simplify right side
    20,721.74x = 400,482,668.17
  5. Step 5: Solve for x
    x = 400,482,668.17/20,721.74
  6. Step 6: Final answer
    x = 19,326.70

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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.