Home / 28,521.48-39,318.47-19,554.78

Finding the Fourth Proportional to 28,521.48, 39,318.47 and 19,554.78

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Solution

The fourth proportional to 28,521.48, 39,318.47 and 19,554.78 is: 26,957.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,521.48 : 39,318.47 = 19,554.78 : x
  2. Step 2: Convert to fraction form
    28,521.48/39,318.47 = 19,554.78/x
  3. Step 3: Cross multiply
    28,521.48x = 39,318.47 × 19,554.78
  4. Step 4: Simplify right side
    28,521.48x = 768,864,030.79
  5. Step 5: Solve for x
    x = 768,864,030.79/28,521.48
  6. Step 6: Final answer
    x = 26,957.37

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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.