Home / 21,254.52-29,332.32-12,302.40

Finding the Fourth Proportional to 21,254.52, 29,332.32 and 12,302.40

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Solution

The fourth proportional to 21,254.52, 29,332.32 and 12,302.40 is: 16,977.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,254.52 : 29,332.32 = 12,302.40 : x
  2. Step 2: Convert to fraction form
    21,254.52/29,332.32 = 12,302.40/x
  3. Step 3: Cross multiply
    21,254.52x = 29,332.32 × 12,302.40
  4. Step 4: Simplify right side
    21,254.52x = 360,857,933.57
  5. Step 5: Solve for x
    x = 360,857,933.57/21,254.52
  6. Step 6: Final answer
    x = 16,977.94

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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.