Home / 12,947.29-19,421.37-3,587.40

Finding the Fourth Proportional to 12,947.29, 19,421.37 and 3,587.40

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Solution

The fourth proportional to 12,947.29, 19,421.37 and 3,587.40 is: 5,381.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,947.29 : 19,421.37 = 3,587.40 : x
  2. Step 2: Convert to fraction form
    12,947.29/19,421.37 = 3,587.40/x
  3. Step 3: Cross multiply
    12,947.29x = 19,421.37 × 3,587.40
  4. Step 4: Simplify right side
    12,947.29x = 69,672,222.74
  5. Step 5: Solve for x
    x = 69,672,222.74/12,947.29
  6. Step 6: Final answer
    x = 5,381.22

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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.