Home / 20,813,089.40-31,219,634.10-16,986,714.20

Finding the Fourth Proportional to 20,813,089.40, 31,219,634.10 and 16,986,714.20

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Solution

The fourth proportional to 20,813,089.40, 31,219,634.10 and 16,986,714.20 is: 25,480,071.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,813,089.40 : 31,219,634.10 = 16,986,714.20 : x
  2. Step 2: Convert to fraction form
    20,813,089.40/31,219,634.10 = 16,986,714.20/x
  3. Step 3: Cross multiply
    20,813,089.40x = 31,219,634.10 × 16,986,714.20
  4. Step 4: Simplify right side
    20,813,089.40x = 530,319,001,885,274.25
  5. Step 5: Solve for x
    x = 530,319,001,885,274.25/20,813,089.40
  6. Step 6: Final answer
    x = 25,480,071.30

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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.