Home / 31,539.86-47,308.74-12,814.35

Finding the Fourth Proportional to 31,539.86, 47,308.74 and 12,814.35

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Solution

The fourth proportional to 31,539.86, 47,308.74 and 12,814.35 is: 19,221.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,539.86 : 47,308.74 = 12,814.35 : x
  2. Step 2: Convert to fraction form
    31,539.86/47,308.74 = 12,814.35/x
  3. Step 3: Cross multiply
    31,539.86x = 47,308.74 × 12,814.35
  4. Step 4: Simplify right side
    31,539.86x = 606,230,752.42
  5. Step 5: Solve for x
    x = 606,230,752.42/31,539.86
  6. Step 6: Final answer
    x = 19,221.10

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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.