Home / 21,263.36-29,339.16-12,307.64

Finding the Fourth Proportional to 21,263.36, 29,339.16 and 12,307.64

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Solution

The fourth proportional to 21,263.36, 29,339.16 and 12,307.64 is: 16,982.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,263.36 : 29,339.16 = 12,307.64 : x
  2. Step 2: Convert to fraction form
    21,263.36/29,339.16 = 12,307.64/x
  3. Step 3: Cross multiply
    21,263.36x = 29,339.16 × 12,307.64
  4. Step 4: Simplify right side
    21,263.36x = 361,095,819.18
  5. Step 5: Solve for x
    x = 361,095,819.18/21,263.36
  6. Step 6: Final answer
    x = 16,982.07

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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.