Home / 21,779.08-32,688.65-13,475.30

Finding the Fourth Proportional to 21,779.08, 32,688.65 and 13,475.30

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Solution

The fourth proportional to 21,779.08, 32,688.65 and 13,475.30 is: 20,225.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,779.08 : 32,688.65 = 13,475.30 : x
  2. Step 2: Convert to fraction form
    21,779.08/32,688.65 = 13,475.30/x
  3. Step 3: Cross multiply
    21,779.08x = 32,688.65 × 13,475.30
  4. Step 4: Simplify right side
    21,779.08x = 440,489,235.59
  5. Step 5: Solve for x
    x = 440,489,235.59/21,779.08
  6. Step 6: Final answer
    x = 20,225.34

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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.