Home / 12,630.72-17,430.40-7,041.92

Finding the Fourth Proportional to 12,630.72, 17,430.40 and 7,041.92

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Solution

The fourth proportional to 12,630.72, 17,430.40 and 7,041.92 is: 9,717.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630.72 : 17,430.40 = 7,041.92 : x
  2. Step 2: Convert to fraction form
    12,630.72/17,430.40 = 7,041.92/x
  3. Step 3: Cross multiply
    12,630.72x = 17,430.40 × 7,041.92
  4. Step 4: Simplify right side
    12,630.72x = 122,743,482.37
  5. Step 5: Solve for x
    x = 122,743,482.37/12,630.72
  6. Step 6: Final answer
    x = 9,717.85

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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.