Home / 28,730.40-39,646.08-16,154.88

Finding the Fourth Proportional to 28,730.40, 39,646.08 and 16,154.88

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Solution

The fourth proportional to 28,730.40, 39,646.08 and 16,154.88 is: 22,292.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,730.40 : 39,646.08 = 16,154.88 : x
  2. Step 2: Convert to fraction form
    28,730.40/39,646.08 = 16,154.88/x
  3. Step 3: Cross multiply
    28,730.40x = 39,646.08 × 16,154.88
  4. Step 4: Simplify right side
    28,730.40x = 640,477,664.87
  5. Step 5: Solve for x
    x = 640,477,664.87/28,730.40
  6. Step 6: Final answer
    x = 22,292.68

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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.