Home / 12,386.25-17,125.47-11,835.45

Finding the Fourth Proportional to 12,386.25, 17,125.47 and 11,835.45

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Solution

The fourth proportional to 12,386.25, 17,125.47 and 11,835.45 is: 16,363.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,386.25 : 17,125.47 = 11,835.45 : x
  2. Step 2: Convert to fraction form
    12,386.25/17,125.47 = 11,835.45/x
  3. Step 3: Cross multiply
    12,386.25x = 17,125.47 × 11,835.45
  4. Step 4: Simplify right side
    12,386.25x = 202,687,643.91
  5. Step 5: Solve for x
    x = 202,687,643.91/12,386.25
  6. Step 6: Final answer
    x = 16,363.92

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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.