Home / 31,426.61-47,152.97-12,719.87

Finding the Fourth Proportional to 31,426.61, 47,152.97 and 12,719.87

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Solution

The fourth proportional to 31,426.61, 47,152.97 and 12,719.87 is: 19,085.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,426.61 : 47,152.97 = 12,719.87 : x
  2. Step 2: Convert to fraction form
    31,426.61/47,152.97 = 12,719.87/x
  3. Step 3: Cross multiply
    31,426.61x = 47,152.97 × 12,719.87
  4. Step 4: Simplify right side
    31,426.61x = 599,779,648.51
  5. Step 5: Solve for x
    x = 599,779,648.51/31,426.61
  6. Step 6: Final answer
    x = 19,085.09

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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.