Home / 15,510.36-21,404.86-8,887.64

Finding the Fourth Proportional to 15,510.36, 21,404.86 and 8,887.64

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Solution

The fourth proportional to 15,510.36, 21,404.86 and 8,887.64 is: 12,265.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,510.36 : 21,404.86 = 8,887.64 : x
  2. Step 2: Convert to fraction form
    15,510.36/21,404.86 = 8,887.64/x
  3. Step 3: Cross multiply
    15,510.36x = 21,404.86 × 8,887.64
  4. Step 4: Simplify right side
    15,510.36x = 190,238,689.93
  5. Step 5: Solve for x
    x = 190,238,689.93/15,510.36
  6. Step 6: Final answer
    x = 12,265.27

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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.