Home / 28,215,035.24-38,937,152.12-21,138,089.13

Finding the Fourth Proportional to 28,215,035.24, 38,937,152.12 and 21,138,089.13

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Solution

The fourth proportional to 28,215,035.24, 38,937,152.12 and 21,138,089.13 is: 29,170,865.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,215,035.24 : 38,937,152.12 = 21,138,089.13 : x
  2. Step 2: Convert to fraction form
    28,215,035.24/38,937,152.12 = 21,138,089.13/x
  3. Step 3: Cross multiply
    28,215,035.24x = 38,937,152.12 × 21,138,089.13
  4. Step 4: Simplify right side
    28,215,035.24x = 823,056,991,875,238
  5. Step 5: Solve for x
    x = 823,056,991,875,238/28,215,035.24
  6. Step 6: Final answer
    x = 29,170,865.29

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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.