Home / 21,583.76-29,782.95-12,509.07

Finding the Fourth Proportional to 21,583.76, 29,782.95 and 12,509.07

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Solution

The fourth proportional to 21,583.76, 29,782.95 and 12,509.07 is: 17,260.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,583.76 : 29,782.95 = 12,509.07 : x
  2. Step 2: Convert to fraction form
    21,583.76/29,782.95 = 12,509.07/x
  3. Step 3: Cross multiply
    21,583.76x = 29,782.95 × 12,509.07
  4. Step 4: Simplify right side
    21,583.76x = 372,557,006.36
  5. Step 5: Solve for x
    x = 372,557,006.36/21,583.76
  6. Step 6: Final answer
    x = 17,260.99

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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.