Home / 38,688,142-53,389,634.88-21,284,112.64

Finding the Fourth Proportional to 38,688,142, 53,389,634.88 and 21,284,112.64

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Solution

The fourth proportional to 38,688,142, 53,389,634.88 and 21,284,112.64 is: 29,372,074.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,688,142 : 53,389,634.88 = 21,284,112.64 : x
  2. Step 2: Convert to fraction form
    38,688,142/53,389,634.88 = 21,284,112.64/x
  3. Step 3: Cross multiply
    38,688,142x = 53,389,634.88 × 21,284,112.64
  4. Step 4: Simplify right side
    38,688,142x = 1,136,351,002,594,393
  5. Step 5: Solve for x
    x = 1,136,351,002,594,393/38,688,142
  6. Step 6: Final answer
    x = 29,372,074.85

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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.