Home / 20,299.61-30,455.55-14,387.91

Finding the Fourth Proportional to 20,299.61, 30,455.55 and 14,387.91

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Solution

The fourth proportional to 20,299.61, 30,455.55 and 14,387.91 is: 21,586.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,299.61 : 30,455.55 = 14,387.91 : x
  2. Step 2: Convert to fraction form
    20,299.61/30,455.55 = 14,387.91/x
  3. Step 3: Cross multiply
    20,299.61x = 30,455.55 × 14,387.91
  4. Step 4: Simplify right side
    20,299.61x = 438,191,712.40
  5. Step 5: Solve for x
    x = 438,191,712.40/20,299.61
  6. Step 6: Final answer
    x = 21,586.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.