Home / 19,287.42-28,898.10-10,528.47

Finding the Fourth Proportional to 19,287.42, 28,898.10 and 10,528.47

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Solution

The fourth proportional to 19,287.42, 28,898.10 and 10,528.47 is: 15,774.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,287.42 : 28,898.10 = 10,528.47 : x
  2. Step 2: Convert to fraction form
    19,287.42/28,898.10 = 10,528.47/x
  3. Step 3: Cross multiply
    19,287.42x = 28,898.10 × 10,528.47
  4. Step 4: Simplify right side
    19,287.42x = 304,252,778.91
  5. Step 5: Solve for x
    x = 304,252,778.91/19,287.42
  6. Step 6: Final answer
    x = 15,774.67

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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.