Home / 21,510.32-29,682.96-12,556.76

Finding the Fourth Proportional to 21,510.32, 29,682.96 and 12,556.76

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Solution

The fourth proportional to 21,510.32, 29,682.96 and 12,556.76 is: 17,327.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,510.32 : 29,682.96 = 12,556.76 : x
  2. Step 2: Convert to fraction form
    21,510.32/29,682.96 = 12,556.76/x
  3. Step 3: Cross multiply
    21,510.32x = 29,682.96 × 12,556.76
  4. Step 4: Simplify right side
    21,510.32x = 372,721,804.81
  5. Step 5: Solve for x
    x = 372,721,804.81/21,510.32
  6. Step 6: Final answer
    x = 17,327.58

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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.