Home / 21,507.02-29,682.08-12,556.74

Finding the Fourth Proportional to 21,507.02, 29,682.08 and 12,556.74

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Solution

The fourth proportional to 21,507.02, 29,682.08 and 12,556.74 is: 17,329.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,507.02 : 29,682.08 = 12,556.74 : x
  2. Step 2: Convert to fraction form
    21,507.02/29,682.08 = 12,556.74/x
  3. Step 3: Cross multiply
    21,507.02x = 29,682.08 × 12,556.74
  4. Step 4: Simplify right side
    21,507.02x = 372,710,161.22
  5. Step 5: Solve for x
    x = 372,710,161.22/21,507.02
  6. Step 6: Final answer
    x = 17,329.70

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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.