Home / 42,668.88-64,000.91-13,086.63

Finding the Fourth Proportional to 42,668.88, 64,000.91 and 13,086.63

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Solution

The fourth proportional to 42,668.88, 64,000.91 and 13,086.63 is: 19,629.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,668.88 : 64,000.91 = 13,086.63 : x
  2. Step 2: Convert to fraction form
    42,668.88/64,000.91 = 13,086.63/x
  3. Step 3: Cross multiply
    42,668.88x = 64,000.91 × 13,086.63
  4. Step 4: Simplify right side
    42,668.88x = 837,556,228.83
  5. Step 5: Solve for x
    x = 837,556,228.83/42,668.88
  6. Step 6: Final answer
    x = 19,629.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.