Home / 28,187.19-42,280.75-11,547.26

Finding the Fourth Proportional to 28,187.19, 42,280.75 and 11,547.26

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Solution

The fourth proportional to 28,187.19, 42,280.75 and 11,547.26 is: 17,320.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,187.19 : 42,280.75 = 11,547.26 : x
  2. Step 2: Convert to fraction form
    28,187.19/42,280.75 = 11,547.26/x
  3. Step 3: Cross multiply
    28,187.19x = 42,280.75 × 11,547.26
  4. Step 4: Simplify right side
    28,187.19x = 488,226,813.25
  5. Step 5: Solve for x
    x = 488,226,813.25/28,187.19
  6. Step 6: Final answer
    x = 17,320.88

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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.