Home / 15,413.52-21,266.64-9,123.06

Finding the Fourth Proportional to 15,413.52, 21,266.64 and 9,123.06

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Solution

The fourth proportional to 15,413.52, 21,266.64 and 9,123.06 is: 12,587.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,413.52 : 21,266.64 = 9,123.06 : x
  2. Step 2: Convert to fraction form
    15,413.52/21,266.64 = 9,123.06/x
  3. Step 3: Cross multiply
    15,413.52x = 21,266.64 × 9,123.06
  4. Step 4: Simplify right side
    15,413.52x = 194,016,832.72
  5. Step 5: Solve for x
    x = 194,016,832.72/15,413.52
  6. Step 6: Final answer
    x = 12,587.44

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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.