Home / 28,970.08-39,980.88-16,396.72

Finding the Fourth Proportional to 28,970.08, 39,980.88 and 16,396.72

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Solution

The fourth proportional to 28,970.08, 39,980.88 and 16,396.72 is: 22,628.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,970.08 : 39,980.88 = 16,396.72 : x
  2. Step 2: Convert to fraction form
    28,970.08/39,980.88 = 16,396.72/x
  3. Step 3: Cross multiply
    28,970.08x = 39,980.88 × 16,396.72
  4. Step 4: Simplify right side
    28,970.08x = 655,555,294.71
  5. Step 5: Solve for x
    x = 655,555,294.71/28,970.08
  6. Step 6: Final answer
    x = 22,628.70

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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.