Home / 26,385-36,411.30-15,207.72

Finding the Fourth Proportional to 26,385, 36,411.30 and 15,207.72

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Solution

The fourth proportional to 26,385, 36,411.30 and 15,207.72 is: 20,986.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,385 : 36,411.30 = 15,207.72 : x
  2. Step 2: Convert to fraction form
    26,385/36,411.30 = 15,207.72/x
  3. Step 3: Cross multiply
    26,385x = 36,411.30 × 15,207.72
  4. Step 4: Simplify right side
    26,385x = 553,732,855.24
  5. Step 5: Solve for x
    x = 553,732,855.24/26,385
  6. Step 6: Final answer
    x = 20,986.65

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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.