Home / 28,430.52-42,638.82-12,626.84

Finding the Fourth Proportional to 28,430.52, 42,638.82 and 12,626.84

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Solution

The fourth proportional to 28,430.52, 42,638.82 and 12,626.84 is: 18,937.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,430.52 : 42,638.82 = 12,626.84 : x
  2. Step 2: Convert to fraction form
    28,430.52/42,638.82 = 12,626.84/x
  3. Step 3: Cross multiply
    28,430.52x = 42,638.82 × 12,626.84
  4. Step 4: Simplify right side
    28,430.52x = 538,393,557.93
  5. Step 5: Solve for x
    x = 538,393,557.93/28,430.52
  6. Step 6: Final answer
    x = 18,937.17

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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.