Home / 23,140.83-34,655.88-21,978.30

Finding the Fourth Proportional to 23,140.83, 34,655.88 and 21,978.30

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Solution

The fourth proportional to 23,140.83, 34,655.88 and 21,978.30 is: 32,914.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,140.83 : 34,655.88 = 21,978.30 : x
  2. Step 2: Convert to fraction form
    23,140.83/34,655.88 = 21,978.30/x
  3. Step 3: Cross multiply
    23,140.83x = 34,655.88 × 21,978.30
  4. Step 4: Simplify right side
    23,140.83x = 761,677,327.40
  5. Step 5: Solve for x
    x = 761,677,327.40/23,140.83
  6. Step 6: Final answer
    x = 32,914.87

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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.