Home / 19,429.22-26,821.44-12,715.10

Finding the Fourth Proportional to 19,429.22, 26,821.44 and 12,715.10

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Solution

The fourth proportional to 19,429.22, 26,821.44 and 12,715.10 is: 17,552.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,429.22 : 26,821.44 = 12,715.10 : x
  2. Step 2: Convert to fraction form
    19,429.22/26,821.44 = 12,715.10/x
  3. Step 3: Cross multiply
    19,429.22x = 26,821.44 × 12,715.10
  4. Step 4: Simplify right side
    19,429.22x = 341,037,291.74
  5. Step 5: Solve for x
    x = 341,037,291.74/19,429.22
  6. Step 6: Final answer
    x = 17,552.80

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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.