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Finding the Fourth Proportional to 28,574.80, 42,829.08 and 16,897.84

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Solution

The fourth proportional to 28,574.80, 42,829.08 and 16,897.84 is: 25,327.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,574.80 : 42,829.08 = 16,897.84 : x
  2. Step 2: Convert to fraction form
    28,574.80/42,829.08 = 16,897.84/x
  3. Step 3: Cross multiply
    28,574.80x = 42,829.08 × 16,897.84
  4. Step 4: Simplify right side
    28,574.80x = 723,718,941.19
  5. Step 5: Solve for x
    x = 723,718,941.19/28,574.80
  6. Step 6: Final answer
    x = 25,327.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.