Home / 15,306.24-21,068.88-13,413.36

Finding the Fourth Proportional to 15,306.24, 21,068.88 and 13,413.36

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Solution

The fourth proportional to 15,306.24, 21,068.88 and 13,413.36 is: 18,463.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,306.24 : 21,068.88 = 13,413.36 : x
  2. Step 2: Convert to fraction form
    15,306.24/21,068.88 = 13,413.36/x
  3. Step 3: Cross multiply
    15,306.24x = 21,068.88 × 13,413.36
  4. Step 4: Simplify right side
    15,306.24x = 282,604,472.24
  5. Step 5: Solve for x
    x = 282,604,472.24/15,306.24
  6. Step 6: Final answer
    x = 18,463.35

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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.