Home / 28,254.72-38,976.80-16,762.95

Finding the Fourth Proportional to 28,254.72, 38,976.80 and 16,762.95

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Solution

The fourth proportional to 28,254.72, 38,976.80 and 16,762.95 is: 23,124.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,254.72 : 38,976.80 = 16,762.95 : x
  2. Step 2: Convert to fraction form
    28,254.72/38,976.80 = 16,762.95/x
  3. Step 3: Cross multiply
    28,254.72x = 38,976.80 × 16,762.95
  4. Step 4: Simplify right side
    28,254.72x = 653,365,870.86
  5. Step 5: Solve for x
    x = 653,365,870.86/28,254.72
  6. Step 6: Final answer
    x = 23,124.13

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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.