Home / 21,207.51-29,265.05-12,253.56

Finding the Fourth Proportional to 21,207.51, 29,265.05 and 12,253.56

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Solution

The fourth proportional to 21,207.51, 29,265.05 and 12,253.56 is: 16,909.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,207.51 : 29,265.05 = 12,253.56 : x
  2. Step 2: Convert to fraction form
    21,207.51/29,265.05 = 12,253.56/x
  3. Step 3: Cross multiply
    21,207.51x = 29,265.05 × 12,253.56
  4. Step 4: Simplify right side
    21,207.51x = 358,600,984.81
  5. Step 5: Solve for x
    x = 358,600,984.81/21,207.51
  6. Step 6: Final answer
    x = 16,909.15

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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.