Home / 12,430.79-17,152.93-8,406.37

Finding the Fourth Proportional to 12,430.79, 17,152.93 and 8,406.37

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Solution

The fourth proportional to 12,430.79, 17,152.93 and 8,406.37 is: 11,599.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,430.79 : 17,152.93 = 8,406.37 : x
  2. Step 2: Convert to fraction form
    12,430.79/17,152.93 = 8,406.37/x
  3. Step 3: Cross multiply
    12,430.79x = 17,152.93 × 8,406.37
  4. Step 4: Simplify right side
    12,430.79x = 144,193,876.16
  5. Step 5: Solve for x
    x = 144,193,876.16/12,430.79
  6. Step 6: Final answer
    x = 11,599.74

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Half scale
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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.