Home / 28,349,731.81-39,120,118.79-15,789,828.16

Finding the Fourth Proportional to 28,349,731.81, 39,120,118.79 and 15,789,828.16

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Solution

The fourth proportional to 28,349,731.81, 39,120,118.79 and 15,789,828.16 is: 21,788,564.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,349,731.81 : 39,120,118.79 = 15,789,828.16 : x
  2. Step 2: Convert to fraction form
    28,349,731.81/39,120,118.79 = 15,789,828.16/x
  3. Step 3: Cross multiply
    28,349,731.81x = 39,120,118.79 × 15,789,828.16
  4. Step 4: Simplify right side
    28,349,731.81x = 617,699,953,292,887.12
  5. Step 5: Solve for x
    x = 617,699,953,292,887.12/28,349,731.81
  6. Step 6: Final answer
    x = 21,788,564.26

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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.