Home / 28,245,373.79-38,979,910.41-15,686,485.88

Finding the Fourth Proportional to 28,245,373.79, 38,979,910.41 and 15,686,485.88

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Solution

The fourth proportional to 28,245,373.79, 38,979,910.41 and 15,686,485.88 is: 21,648,069.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,245,373.79 : 38,979,910.41 = 15,686,485.88 : x
  2. Step 2: Convert to fraction form
    28,245,373.79/38,979,910.41 = 15,686,485.88/x
  3. Step 3: Cross multiply
    28,245,373.79x = 38,979,910.41 × 15,686,485.88
  4. Step 4: Simplify right side
    28,245,373.79x = 611,457,814,250,130
  5. Step 5: Solve for x
    x = 611,457,814,250,130/28,245,373.79
  6. Step 6: Final answer
    x = 21,648,069.48

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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.