Home / 28,970.04-39,980.88-16,396.68

Finding the Fourth Proportional to 28,970.04, 39,980.88 and 16,396.68

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Solution

The fourth proportional to 28,970.04, 39,980.88 and 16,396.68 is: 22,628.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,970.04 : 39,980.88 = 16,396.68 : x
  2. Step 2: Convert to fraction form
    28,970.04/39,980.88 = 16,396.68/x
  3. Step 3: Cross multiply
    28,970.04x = 39,980.88 × 16,396.68
  4. Step 4: Simplify right side
    28,970.04x = 655,553,695.48
  5. Step 5: Solve for x
    x = 655,553,695.48/28,970.04
  6. Step 6: Final answer
    x = 22,628.68

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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.