Home / 28,677.16-42,999-11,126.49

Finding the Fourth Proportional to 28,677.16, 42,999 and 11,126.49

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Solution

The fourth proportional to 28,677.16, 42,999 and 11,126.49 is: 16,683.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,677.16 : 42,999 = 11,126.49 : x
  2. Step 2: Convert to fraction form
    28,677.16/42,999 = 11,126.49/x
  3. Step 3: Cross multiply
    28,677.16x = 42,999 × 11,126.49
  4. Step 4: Simplify right side
    28,677.16x = 478,427,728.52
  5. Step 5: Solve for x
    x = 478,427,728.52/28,677.16
  6. Step 6: Final answer
    x = 16,683.23

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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.