Home / 21,567.35-29,779.16-21,222.90

Finding the Fourth Proportional to 21,567.35, 29,779.16 and 21,222.90

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Solution

The fourth proportional to 21,567.35, 29,779.16 and 21,222.90 is: 29,303.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,567.35 : 29,779.16 = 21,222.90 : x
  2. Step 2: Convert to fraction form
    21,567.35/29,779.16 = 21,222.90/x
  3. Step 3: Cross multiply
    21,567.35x = 29,779.16 × 21,222.90
  4. Step 4: Simplify right side
    21,567.35x = 632,000,134.76
  5. Step 5: Solve for x
    x = 632,000,134.76/21,567.35
  6. Step 6: Final answer
    x = 29,303.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.