Home / 13,991.52-19,308.60-7,703.76

Finding the Fourth Proportional to 13,991.52, 19,308.60 and 7,703.76

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Solution

The fourth proportional to 13,991.52, 19,308.60 and 7,703.76 is: 10,631.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,991.52 : 19,308.60 = 7,703.76 : x
  2. Step 2: Convert to fraction form
    13,991.52/19,308.60 = 7,703.76/x
  3. Step 3: Cross multiply
    13,991.52x = 19,308.60 × 7,703.76
  4. Step 4: Simplify right side
    13,991.52x = 148,748,820.34
  5. Step 5: Solve for x
    x = 148,748,820.34/13,991.52
  6. Step 6: Final answer
    x = 10,631.36

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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.