Home / 31,289.04-43,184.40-18,713.76

Finding the Fourth Proportional to 31,289.04, 43,184.40 and 18,713.76

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Solution

The fourth proportional to 31,289.04, 43,184.40 and 18,713.76 is: 25,828.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,289.04 : 43,184.40 = 18,713.76 : x
  2. Step 2: Convert to fraction form
    31,289.04/43,184.40 = 18,713.76/x
  3. Step 3: Cross multiply
    31,289.04x = 43,184.40 × 18,713.76
  4. Step 4: Simplify right side
    31,289.04x = 808,142,497.34
  5. Step 5: Solve for x
    x = 808,142,497.34/31,289.04
  6. Step 6: Final answer
    x = 25,828.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.