Home / 21,114.58-31,515.91-18,624.28

Finding the Fourth Proportional to 21,114.58, 31,515.91 and 18,624.28

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Solution

The fourth proportional to 21,114.58, 31,515.91 and 18,624.28 is: 27,798.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,114.58 : 31,515.91 = 18,624.28 : x
  2. Step 2: Convert to fraction form
    21,114.58/31,515.91 = 18,624.28/x
  3. Step 3: Cross multiply
    21,114.58x = 31,515.91 × 18,624.28
  4. Step 4: Simplify right side
    21,114.58x = 586,961,132.29
  5. Step 5: Solve for x
    x = 586,961,132.29/21,114.58
  6. Step 6: Final answer
    x = 27,798.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.