Home / 12,746.67-17,590.64-7,157.87

Finding the Fourth Proportional to 12,746.67, 17,590.64 and 7,157.87

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Solution

The fourth proportional to 12,746.67, 17,590.64 and 7,157.87 is: 9,877.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,746.67 : 17,590.64 = 7,157.87 : x
  2. Step 2: Convert to fraction form
    12,746.67/17,590.64 = 7,157.87/x
  3. Step 3: Cross multiply
    12,746.67x = 17,590.64 × 7,157.87
  4. Step 4: Simplify right side
    12,746.67x = 125,911,478.55
  5. Step 5: Solve for x
    x = 125,911,478.55/12,746.67
  6. Step 6: Final answer
    x = 9,877.99

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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.