Home / 39,300.81-58,931.18-19,311.63

Finding the Fourth Proportional to 39,300.81, 58,931.18 and 19,311.63

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Solution

The fourth proportional to 39,300.81, 58,931.18 and 19,311.63 is: 28,957.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,300.81 : 58,931.18 = 19,311.63 : x
  2. Step 2: Convert to fraction form
    39,300.81/58,931.18 = 19,311.63/x
  3. Step 3: Cross multiply
    39,300.81x = 58,931.18 × 19,311.63
  4. Step 4: Simplify right side
    39,300.81x = 1,138,056,848.97
  5. Step 5: Solve for x
    x = 1,138,056,848.97/39,300.81
  6. Step 6: Final answer
    x = 28,957.60

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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.