Home / 20,570.63-30,856.04-4,988.25

Finding the Fourth Proportional to 20,570.63, 30,856.04 and 4,988.25

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Solution

The fourth proportional to 20,570.63, 30,856.04 and 4,988.25 is: 7,482.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,570.63 : 30,856.04 = 4,988.25 : x
  2. Step 2: Convert to fraction form
    20,570.63/30,856.04 = 4,988.25/x
  3. Step 3: Cross multiply
    20,570.63x = 30,856.04 × 4,988.25
  4. Step 4: Simplify right side
    20,570.63x = 153,917,635.29
  5. Step 5: Solve for x
    x = 153,917,635.29/20,570.63
  6. Step 6: Final answer
    x = 7,482.40

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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.