Home / 20,307.10-30,460.65-19,432.30

Finding the Fourth Proportional to 20,307.10, 30,460.65 and 19,432.30

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Solution

The fourth proportional to 20,307.10, 30,460.65 and 19,432.30 is: 29,148.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,307.10 : 30,460.65 = 19,432.30 : x
  2. Step 2: Convert to fraction form
    20,307.10/30,460.65 = 19,432.30/x
  3. Step 3: Cross multiply
    20,307.10x = 30,460.65 × 19,432.30
  4. Step 4: Simplify right side
    20,307.10x = 591,920,489.00
  5. Step 5: Solve for x
    x = 591,920,489.00/20,307.10
  6. Step 6: Final answer
    x = 29,148.45

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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.