Home / 10,458.79-15,680.59-4,909.28

Finding the Fourth Proportional to 10,458.79, 15,680.59 and 4,909.28

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Solution

The fourth proportional to 10,458.79, 15,680.59 and 4,909.28 is: 7,360.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,458.79 : 15,680.59 = 4,909.28 : x
  2. Step 2: Convert to fraction form
    10,458.79/15,680.59 = 4,909.28/x
  3. Step 3: Cross multiply
    10,458.79x = 15,680.59 × 4,909.28
  4. Step 4: Simplify right side
    10,458.79x = 76,980,316.20
  5. Step 5: Solve for x
    x = 76,980,316.20/10,458.79
  6. Step 6: Final answer
    x = 7,360.35

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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.