Home / 13,987.58-19,302.80-7,699.95

Finding the Fourth Proportional to 13,987.58, 19,302.80 and 7,699.95

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Solution

The fourth proportional to 13,987.58, 19,302.80 and 7,699.95 is: 10,625.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.58 : 19,302.80 = 7,699.95 : x
  2. Step 2: Convert to fraction form
    13,987.58/19,302.80 = 7,699.95/x
  3. Step 3: Cross multiply
    13,987.58x = 19,302.80 × 7,699.95
  4. Step 4: Simplify right side
    13,987.58x = 148,630,556.36
  5. Step 5: Solve for x
    x = 148,630,556.36/13,987.58
  6. Step 6: Final answer
    x = 10,625.90

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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.