Home / 30,580.32-45,810.73-21,070.21

Finding the Fourth Proportional to 30,580.32, 45,810.73 and 21,070.21

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Solution

The fourth proportional to 30,580.32, 45,810.73 and 21,070.21 is: 31,564.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,580.32 : 45,810.73 = 21,070.21 : x
  2. Step 2: Convert to fraction form
    30,580.32/45,810.73 = 21,070.21/x
  3. Step 3: Cross multiply
    30,580.32x = 45,810.73 × 21,070.21
  4. Step 4: Simplify right side
    30,580.32x = 965,241,699.06
  5. Step 5: Solve for x
    x = 965,241,699.06/30,580.32
  6. Step 6: Final answer
    x = 31,564.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.