Home / 14,345.61-21,374.22-13,539.86

Finding the Fourth Proportional to 14,345.61, 21,374.22 and 13,539.86

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Solution

The fourth proportional to 14,345.61, 21,374.22 and 13,539.86 is: 20,173.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,345.61 : 21,374.22 = 13,539.86 : x
  2. Step 2: Convert to fraction form
    14,345.61/21,374.22 = 13,539.86/x
  3. Step 3: Cross multiply
    14,345.61x = 21,374.22 × 13,539.86
  4. Step 4: Simplify right side
    14,345.61x = 289,403,946.41
  5. Step 5: Solve for x
    x = 289,403,946.41/14,345.61
  6. Step 6: Final answer
    x = 20,173.69

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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.