Home / 13,985.72-19,302.18-12,804.68

Finding the Fourth Proportional to 13,985.72, 19,302.18 and 12,804.68

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Solution

The fourth proportional to 13,985.72, 19,302.18 and 12,804.68 is: 17,672.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,985.72 : 19,302.18 = 12,804.68 : x
  2. Step 2: Convert to fraction form
    13,985.72/19,302.18 = 12,804.68/x
  3. Step 3: Cross multiply
    13,985.72x = 19,302.18 × 12,804.68
  4. Step 4: Simplify right side
    13,985.72x = 247,158,238.20
  5. Step 5: Solve for x
    x = 247,158,238.20/13,985.72
  6. Step 6: Final answer
    x = 17,672.19

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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.