Home / 28,966.61-39,970.40-16,218.79

Finding the Fourth Proportional to 28,966.61, 39,970.40 and 16,218.79

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Solution

The fourth proportional to 28,966.61, 39,970.40 and 16,218.79 is: 22,379.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,966.61 : 39,970.40 = 16,218.79 : x
  2. Step 2: Convert to fraction form
    28,966.61/39,970.40 = 16,218.79/x
  3. Step 3: Cross multiply
    28,966.61x = 39,970.40 × 16,218.79
  4. Step 4: Simplify right side
    28,966.61x = 648,271,523.82
  5. Step 5: Solve for x
    x = 648,271,523.82/28,966.61
  6. Step 6: Final answer
    x = 22,379.96

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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.