Home / 19,031.70-28,547.55-13,491.30

Finding the Fourth Proportional to 19,031.70, 28,547.55 and 13,491.30

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Solution

The fourth proportional to 19,031.70, 28,547.55 and 13,491.30 is: 20,236.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,031.70 : 28,547.55 = 13,491.30 : x
  2. Step 2: Convert to fraction form
    19,031.70/28,547.55 = 13,491.30/x
  3. Step 3: Cross multiply
    19,031.70x = 28,547.55 × 13,491.30
  4. Step 4: Simplify right side
    19,031.70x = 385,143,561.32
  5. Step 5: Solve for x
    x = 385,143,561.32/19,031.70
  6. Step 6: Final answer
    x = 20,236.95

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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.