Home / 28,343,826.48-39,116,172.60-21,457,400.88

Finding the Fourth Proportional to 28,343,826.48, 39,116,172.60 and 21,457,400.88

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Solution

The fourth proportional to 28,343,826.48, 39,116,172.60 and 21,457,400.88 is: 29,612,494.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,343,826.48 : 39,116,172.60 = 21,457,400.88 : x
  2. Step 2: Convert to fraction form
    28,343,826.48/39,116,172.60 = 21,457,400.88/x
  3. Step 3: Cross multiply
    28,343,826.48x = 39,116,172.60 × 21,457,400.88
  4. Step 4: Simplify right side
    28,343,826.48x = 839,331,396,369,471.88
  5. Step 5: Solve for x
    x = 839,331,396,369,471.88/28,343,826.48
  6. Step 6: Final answer
    x = 29,612,494.17

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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.