Home / 15,708.36-21,670.31-13,917.67

Finding the Fourth Proportional to 15,708.36, 21,670.31 and 13,917.67

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Solution

The fourth proportional to 15,708.36, 21,670.31 and 13,917.67 is: 19,199.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,708.36 : 21,670.31 = 13,917.67 : x
  2. Step 2: Convert to fraction form
    15,708.36/21,670.31 = 13,917.67/x
  3. Step 3: Cross multiply
    15,708.36x = 21,670.31 × 13,917.67
  4. Step 4: Simplify right side
    15,708.36x = 301,600,204.00
  5. Step 5: Solve for x
    x = 301,600,204.00/15,708.36
  6. Step 6: Final answer
    x = 19,199.98

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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.