Home / 31,377.81-47,066.74-19,699.23

Finding the Fourth Proportional to 31,377.81, 47,066.74 and 19,699.23

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Solution

The fourth proportional to 31,377.81, 47,066.74 and 19,699.23 is: 29,548.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,377.81 : 47,066.74 = 19,699.23 : x
  2. Step 2: Convert to fraction form
    31,377.81/47,066.74 = 19,699.23/x
  3. Step 3: Cross multiply
    31,377.81x = 47,066.74 × 19,699.23
  4. Step 4: Simplify right side
    31,377.81x = 927,178,663.86
  5. Step 5: Solve for x
    x = 927,178,663.86/31,377.81
  6. Step 6: Final answer
    x = 29,548.86

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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.