Home / 28,147.06-42,220.57-13,347.91

Finding the Fourth Proportional to 28,147.06, 42,220.57 and 13,347.91

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Solution

The fourth proportional to 28,147.06, 42,220.57 and 13,347.91 is: 20,021.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,147.06 : 42,220.57 = 13,347.91 : x
  2. Step 2: Convert to fraction form
    28,147.06/42,220.57 = 13,347.91/x
  3. Step 3: Cross multiply
    28,147.06x = 42,220.57 × 13,347.91
  4. Step 4: Simplify right side
    28,147.06x = 563,556,368.51
  5. Step 5: Solve for x
    x = 563,556,368.51/28,147.06
  6. Step 6: Final answer
    x = 20,021.86

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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.