Home / 28,186,944-38,898,021.60-15,309,888

Finding the Fourth Proportional to 28,186,944, 38,898,021.60 and 15,309,888

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Solution

The fourth proportional to 28,186,944, 38,898,021.60 and 15,309,888 is: 21,127,666.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,186,944 : 38,898,021.60 = 15,309,888 : x
  2. Step 2: Convert to fraction form
    28,186,944/38,898,021.60 = 15,309,888/x
  3. Step 3: Cross multiply
    28,186,944x = 38,898,021.60 × 15,309,888
  4. Step 4: Simplify right side
    28,186,944x = 595,524,354,117,580.88
  5. Step 5: Solve for x
    x = 595,524,354,117,580.88/28,186,944
  6. Step 6: Final answer
    x = 21,127,666.56

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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.