Home / 19,478.07-29,195.64-12,435.93

Finding the Fourth Proportional to 19,478.07, 29,195.64 and 12,435.93

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Solution

The fourth proportional to 19,478.07, 29,195.64 and 12,435.93 is: 18,640.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,478.07 : 29,195.64 = 12,435.93 : x
  2. Step 2: Convert to fraction form
    19,478.07/29,195.64 = 12,435.93/x
  3. Step 3: Cross multiply
    19,478.07x = 29,195.64 × 12,435.93
  4. Step 4: Simplify right side
    19,478.07x = 363,074,935.35
  5. Step 5: Solve for x
    x = 363,074,935.35/19,478.07
  6. Step 6: Final answer
    x = 18,640.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.