Home / 21,145,117.80-31,717,676.70-20,053,367.40

Finding the Fourth Proportional to 21,145,117.80, 31,717,676.70 and 20,053,367.40

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Solution

The fourth proportional to 21,145,117.80, 31,717,676.70 and 20,053,367.40 is: 30,080,051.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,145,117.80 : 31,717,676.70 = 20,053,367.40 : x
  2. Step 2: Convert to fraction form
    21,145,117.80/31,717,676.70 = 20,053,367.40/x
  3. Step 3: Cross multiply
    21,145,117.80x = 31,717,676.70 × 20,053,367.40
  4. Step 4: Simplify right side
    21,145,117.80x = 636,046,223,939,519.50
  5. Step 5: Solve for x
    x = 636,046,223,939,519.50/21,145,117.80
  6. Step 6: Final answer
    x = 30,080,051.10

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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.