Home / 21,321.02-29,423.22-12,370.70

Finding the Fourth Proportional to 21,321.02, 29,423.22 and 12,370.70

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Solution

The fourth proportional to 21,321.02, 29,423.22 and 12,370.70 is: 17,071.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,321.02 : 29,423.22 = 12,370.70 : x
  2. Step 2: Convert to fraction form
    21,321.02/29,423.22 = 12,370.70/x
  3. Step 3: Cross multiply
    21,321.02x = 29,423.22 × 12,370.70
  4. Step 4: Simplify right side
    21,321.02x = 363,985,827.65
  5. Step 5: Solve for x
    x = 363,985,827.65/21,321.02
  6. Step 6: Final answer
    x = 17,071.69

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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.