Home / 28,245,374.29-38,979,911.10-15,686,486.38

Finding the Fourth Proportional to 28,245,374.29, 38,979,911.10 and 15,686,486.38

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Solution

The fourth proportional to 28,245,374.29, 38,979,911.10 and 15,686,486.38 is: 21,648,070.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,245,374.29 : 38,979,911.10 = 15,686,486.38 : x
  2. Step 2: Convert to fraction form
    28,245,374.29/38,979,911.10 = 15,686,486.38/x
  3. Step 3: Cross multiply
    28,245,374.29x = 38,979,911.10 × 15,686,486.38
  4. Step 4: Simplify right side
    28,245,374.29x = 611,457,844,563,760.88
  5. Step 5: Solve for x
    x = 611,457,844,563,760.88/28,245,374.29
  6. Step 6: Final answer
    x = 21,648,070.17

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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.