Home / 15,497.22-21,386.62-8,782.63

Finding the Fourth Proportional to 15,497.22, 21,386.62 and 8,782.63

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Solution

The fourth proportional to 15,497.22, 21,386.62 and 8,782.63 is: 12,120.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,497.22 : 21,386.62 = 8,782.63 : x
  2. Step 2: Convert to fraction form
    15,497.22/21,386.62 = 8,782.63/x
  3. Step 3: Cross multiply
    15,497.22x = 21,386.62 × 8,782.63
  4. Step 4: Simplify right side
    15,497.22x = 187,830,715.57
  5. Step 5: Solve for x
    x = 187,830,715.57/15,497.22
  6. Step 6: Final answer
    x = 12,120.28

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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.