Home / 20,440.10-28,207.58-12,373.64

Finding the Fourth Proportional to 20,440.10, 28,207.58 and 12,373.64

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Solution

The fourth proportional to 20,440.10, 28,207.58 and 12,373.64 is: 17,075.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440.10 : 28,207.58 = 12,373.64 : x
  2. Step 2: Convert to fraction form
    20,440.10/28,207.58 = 12,373.64/x
  3. Step 3: Cross multiply
    20,440.10x = 28,207.58 × 12,373.64
  4. Step 4: Simplify right side
    20,440.10x = 349,030,237.29
  5. Step 5: Solve for x
    x = 349,030,237.29/20,440.10
  6. Step 6: Final answer
    x = 17,075.76

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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.