Home / 21,275.48-29,337.18-20,791.64

Finding the Fourth Proportional to 21,275.48, 29,337.18 and 20,791.64

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Solution

The fourth proportional to 21,275.48, 29,337.18 and 20,791.64 is: 28,670.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275.48 : 29,337.18 = 20,791.64 : x
  2. Step 2: Convert to fraction form
    21,275.48/29,337.18 = 20,791.64/x
  3. Step 3: Cross multiply
    21,275.48x = 29,337.18 × 20,791.64
  4. Step 4: Simplify right side
    21,275.48x = 609,968,085.18
  5. Step 5: Solve for x
    x = 609,968,085.18/21,275.48
  6. Step 6: Final answer
    x = 28,670.00

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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.