Home / 21,237.04-29,308.76-12,739.52

Finding the Fourth Proportional to 21,237.04, 29,308.76 and 12,739.52

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Solution

The fourth proportional to 21,237.04, 29,308.76 and 12,739.52 is: 17,581.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,237.04 : 29,308.76 = 12,739.52 : x
  2. Step 2: Convert to fraction form
    21,237.04/29,308.76 = 12,739.52/x
  3. Step 3: Cross multiply
    21,237.04x = 29,308.76 × 12,739.52
  4. Step 4: Simplify right side
    21,237.04x = 373,379,534.20
  5. Step 5: Solve for x
    x = 373,379,534.20/21,237.04
  6. Step 6: Final answer
    x = 17,581.52

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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.