Home / 13,991.22-19,307.70-7,703.46

Finding the Fourth Proportional to 13,991.22, 19,307.70 and 7,703.46

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Solution

The fourth proportional to 13,991.22, 19,307.70 and 7,703.46 is: 10,630.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,991.22 : 19,307.70 = 7,703.46 : x
  2. Step 2: Convert to fraction form
    13,991.22/19,307.70 = 7,703.46/x
  3. Step 3: Cross multiply
    13,991.22x = 19,307.70 × 7,703.46
  4. Step 4: Simplify right side
    13,991.22x = 148,736,094.64
  5. Step 5: Solve for x
    x = 148,736,094.64/13,991.22
  6. Step 6: Final answer
    x = 10,630.67

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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.