Home / 27,430.72-41,075.84-18,985.55

Finding the Fourth Proportional to 27,430.72, 41,075.84 and 18,985.55

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Solution

The fourth proportional to 27,430.72, 41,075.84 and 18,985.55 is: 28,429.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,430.72 : 41,075.84 = 18,985.55 : x
  2. Step 2: Convert to fraction form
    27,430.72/41,075.84 = 18,985.55/x
  3. Step 3: Cross multiply
    27,430.72x = 41,075.84 × 18,985.55
  4. Step 4: Simplify right side
    27,430.72x = 779,847,256.20
  5. Step 5: Solve for x
    x = 779,847,256.20/27,430.72
  6. Step 6: Final answer
    x = 28,429.71

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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.