Home / 21,510.45-29,689.18-11,953.62

Finding the Fourth Proportional to 21,510.45, 29,689.18 and 11,953.62

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Solution

The fourth proportional to 21,510.45, 29,689.18 and 11,953.62 is: 16,498.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,510.45 : 29,689.18 = 11,953.62 : x
  2. Step 2: Convert to fraction form
    21,510.45/29,689.18 = 11,953.62/x
  3. Step 3: Cross multiply
    21,510.45x = 29,689.18 × 11,953.62
  4. Step 4: Simplify right side
    21,510.45x = 354,893,145.95
  5. Step 5: Solve for x
    x = 354,893,145.95/21,510.45
  6. Step 6: Final answer
    x = 16,498.64

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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.