Home / 20,541.64-28,345.62-11,586.76

Finding the Fourth Proportional to 20,541.64, 28,345.62 and 11,586.76

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Solution

The fourth proportional to 20,541.64, 28,345.62 and 11,586.76 is: 15,988.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,541.64 : 28,345.62 = 11,586.76 : x
  2. Step 2: Convert to fraction form
    20,541.64/28,345.62 = 11,586.76/x
  3. Step 3: Cross multiply
    20,541.64x = 28,345.62 × 11,586.76
  4. Step 4: Simplify right side
    20,541.64x = 328,433,895.99
  5. Step 5: Solve for x
    x = 328,433,895.99/20,541.64
  6. Step 6: Final answer
    x = 15,988.69

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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.