Home / 21,987.52-30,332.24-14,430.80

Finding the Fourth Proportional to 21,987.52, 30,332.24 and 14,430.80

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Solution

The fourth proportional to 21,987.52, 30,332.24 and 14,430.80 is: 19,907.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,987.52 : 30,332.24 = 14,430.80 : x
  2. Step 2: Convert to fraction form
    21,987.52/30,332.24 = 14,430.80/x
  3. Step 3: Cross multiply
    21,987.52x = 30,332.24 × 14,430.80
  4. Step 4: Simplify right side
    21,987.52x = 437,718,488.99
  5. Step 5: Solve for x
    x = 437,718,488.99/21,987.52
  6. Step 6: Final answer
    x = 19,907.59

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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.