Home / 28,130.71-42,216.84-13,339.68

Finding the Fourth Proportional to 28,130.71, 42,216.84 and 13,339.68

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Solution

The fourth proportional to 28,130.71, 42,216.84 and 13,339.68 is: 20,019.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,130.71 : 42,216.84 = 13,339.68 : x
  2. Step 2: Convert to fraction form
    28,130.71/42,216.84 = 13,339.68/x
  3. Step 3: Cross multiply
    28,130.71x = 42,216.84 × 13,339.68
  4. Step 4: Simplify right side
    28,130.71x = 563,159,136.21
  5. Step 5: Solve for x
    x = 563,159,136.21/28,130.71
  6. Step 6: Final answer
    x = 20,019.37

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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.