Home / 31,357.46-47,019.63-13,818.98

Finding the Fourth Proportional to 31,357.46, 47,019.63 and 13,818.98

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Solution

The fourth proportional to 31,357.46, 47,019.63 and 13,818.98 is: 20,721.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,357.46 : 47,019.63 = 13,818.98 : x
  2. Step 2: Convert to fraction form
    31,357.46/47,019.63 = 13,818.98/x
  3. Step 3: Cross multiply
    31,357.46x = 47,019.63 × 13,818.98
  4. Step 4: Simplify right side
    31,357.46x = 649,763,326.58
  5. Step 5: Solve for x
    x = 649,763,326.58/31,357.46
  6. Step 6: Final answer
    x = 20,721.17

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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.