Home / 10,386.19-15,581.88-2,990.48

Finding the Fourth Proportional to 10,386.19, 15,581.88 and 2,990.48

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Solution

The fourth proportional to 10,386.19, 15,581.88 and 2,990.48 is: 4,486.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,386.19 : 15,581.88 = 2,990.48 : x
  2. Step 2: Convert to fraction form
    10,386.19/15,581.88 = 2,990.48/x
  3. Step 3: Cross multiply
    10,386.19x = 15,581.88 × 2,990.48
  4. Step 4: Simplify right side
    10,386.19x = 46,597,300.50
  5. Step 5: Solve for x
    x = 46,597,300.50/10,386.19
  6. Step 6: Final answer
    x = 4,486.47

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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.