Home / 21,002.36-28,984.23-12,502.55

Finding the Fourth Proportional to 21,002.36, 28,984.23 and 12,502.55

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Solution

The fourth proportional to 21,002.36, 28,984.23 and 12,502.55 is: 17,254.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002.36 : 28,984.23 = 12,502.55 : x
  2. Step 2: Convert to fraction form
    21,002.36/28,984.23 = 12,502.55/x
  3. Step 3: Cross multiply
    21,002.36x = 28,984.23 × 12,502.55
  4. Step 4: Simplify right side
    21,002.36x = 362,376,857.25
  5. Step 5: Solve for x
    x = 362,376,857.25/21,002.36
  6. Step 6: Final answer
    x = 17,254.11

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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.