Home / 19,140.98-28,711.53-5,814.09

Finding the Fourth Proportional to 19,140.98, 28,711.53 and 5,814.09

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Solution

The fourth proportional to 19,140.98, 28,711.53 and 5,814.09 is: 8,721.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,140.98 : 28,711.53 = 5,814.09 : x
  2. Step 2: Convert to fraction form
    19,140.98/28,711.53 = 5,814.09/x
  3. Step 3: Cross multiply
    19,140.98x = 28,711.53 × 5,814.09
  4. Step 4: Simplify right side
    19,140.98x = 166,931,419.46
  5. Step 5: Solve for x
    x = 166,931,419.46/19,140.98
  6. Step 6: Final answer
    x = 8,721.16

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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.