Home / 12,345.67-17,033.65-7,038.55

Finding the Fourth Proportional to 12,345.67, 17,033.65 and 7,038.55

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Solution

The fourth proportional to 12,345.67, 17,033.65 and 7,038.55 is: 9,711.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,345.67 : 17,033.65 = 7,038.55 : x
  2. Step 2: Convert to fraction form
    12,345.67/17,033.65 = 7,038.55/x
  3. Step 3: Cross multiply
    12,345.67x = 17,033.65 × 7,038.55
  4. Step 4: Simplify right side
    12,345.67x = 119,892,197.21
  5. Step 5: Solve for x
    x = 119,892,197.21/12,345.67
  6. Step 6: Final answer
    x = 9,711.28

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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.