Home / 28,403.09-42,604.74-8,681.57

Finding the Fourth Proportional to 28,403.09, 42,604.74 and 8,681.57

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Solution

The fourth proportional to 28,403.09, 42,604.74 and 8,681.57 is: 13,022.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,403.09 : 42,604.74 = 8,681.57 : x
  2. Step 2: Convert to fraction form
    28,403.09/42,604.74 = 8,681.57/x
  3. Step 3: Cross multiply
    28,403.09x = 42,604.74 × 8,681.57
  4. Step 4: Simplify right side
    28,403.09x = 369,875,979.39
  5. Step 5: Solve for x
    x = 369,875,979.39/28,403.09
  6. Step 6: Final answer
    x = 13,022.39

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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.