Home / 25,430.80-38,170.72-12,292.40

Finding the Fourth Proportional to 25,430.80, 38,170.72 and 12,292.40

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Solution

The fourth proportional to 25,430.80, 38,170.72 and 12,292.40 is: 18,450.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,430.80 : 38,170.72 = 12,292.40 : x
  2. Step 2: Convert to fraction form
    25,430.80/38,170.72 = 12,292.40/x
  3. Step 3: Cross multiply
    25,430.80x = 38,170.72 × 12,292.40
  4. Step 4: Simplify right side
    25,430.80x = 469,209,758.53
  5. Step 5: Solve for x
    x = 469,209,758.53/25,430.80
  6. Step 6: Final answer
    x = 18,450.45

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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.