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Finding the Fourth Proportional to 15,320.51, 22,969.08 and 7,920.25

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Solution

The fourth proportional to 15,320.51, 22,969.08 and 7,920.25 is: 11,874.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,320.51 : 22,969.08 = 7,920.25 : x
  2. Step 2: Convert to fraction form
    15,320.51/22,969.08 = 7,920.25/x
  3. Step 3: Cross multiply
    15,320.51x = 22,969.08 × 7,920.25
  4. Step 4: Simplify right side
    15,320.51x = 181,920,798.45
  5. Step 5: Solve for x
    x = 181,920,798.45/15,320.51
  6. Step 6: Final answer
    x = 11,874.33

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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.