Home / 15,870.18-23,805.45-5,479.50

Finding the Fourth Proportional to 15,870.18, 23,805.45 and 5,479.50

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Solution

The fourth proportional to 15,870.18, 23,805.45 and 5,479.50 is: 8,219.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,870.18 : 23,805.45 = 5,479.50 : x
  2. Step 2: Convert to fraction form
    15,870.18/23,805.45 = 5,479.50/x
  3. Step 3: Cross multiply
    15,870.18x = 23,805.45 × 5,479.50
  4. Step 4: Simplify right side
    15,870.18x = 130,441,963.28
  5. Step 5: Solve for x
    x = 130,441,963.28/15,870.18
  6. Step 6: Final answer
    x = 8,219.31

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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.