Home / 28,851.90-43,277.85-21,018.30

Finding the Fourth Proportional to 28,851.90, 43,277.85 and 21,018.30

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Solution

The fourth proportional to 28,851.90, 43,277.85 and 21,018.30 is: 31,527.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,851.90 : 43,277.85 = 21,018.30 : x
  2. Step 2: Convert to fraction form
    28,851.90/43,277.85 = 21,018.30/x
  3. Step 3: Cross multiply
    28,851.90x = 43,277.85 × 21,018.30
  4. Step 4: Simplify right side
    28,851.90x = 909,626,834.66
  5. Step 5: Solve for x
    x = 909,626,834.66/28,851.90
  6. Step 6: Final answer
    x = 31,527.45

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1.5x scale

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.