Home / 20,780.37-28,657.77-14,075.82

Finding the Fourth Proportional to 20,780.37, 28,657.77 and 14,075.82

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Solution

The fourth proportional to 20,780.37, 28,657.77 and 14,075.82 is: 19,411.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,780.37 : 28,657.77 = 14,075.82 : x
  2. Step 2: Convert to fraction form
    20,780.37/28,657.77 = 14,075.82/x
  3. Step 3: Cross multiply
    20,780.37x = 28,657.77 × 14,075.82
  4. Step 4: Simplify right side
    20,780.37x = 403,381,612.12
  5. Step 5: Solve for x
    x = 403,381,612.12/20,780.37
  6. Step 6: Final answer
    x = 19,411.67

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1.5x scale

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.