Home / 28,179,443.63-38,911,330.19-21,198,020.22

Finding the Fourth Proportional to 28,179,443.63, 38,911,330.19 and 21,198,020.22

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Solution

The fourth proportional to 28,179,443.63, 38,911,330.19 and 21,198,020.22 is: 29,271,094.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179,443.63 : 38,911,330.19 = 21,198,020.22 : x
  2. Step 2: Convert to fraction form
    28,179,443.63/38,911,330.19 = 21,198,020.22/x
  3. Step 3: Cross multiply
    28,179,443.63x = 38,911,330.19 × 21,198,020.22
  4. Step 4: Simplify right side
    28,179,443.63x = 824,843,164,207,711.50
  5. Step 5: Solve for x
    x = 824,843,164,207,711.50/28,179,443.63
  6. Step 6: Final answer
    x = 29,271,094.74

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Double scale
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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.