Home / 13,530.72-18,655.40-10,347.92

Finding the Fourth Proportional to 13,530.72, 18,655.40 and 10,347.92

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Solution

The fourth proportional to 13,530.72, 18,655.40 and 10,347.92 is: 14,267.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,530.72 : 18,655.40 = 10,347.92 : x
  2. Step 2: Convert to fraction form
    13,530.72/18,655.40 = 10,347.92/x
  3. Step 3: Cross multiply
    13,530.72x = 18,655.40 × 10,347.92
  4. Step 4: Simplify right side
    13,530.72x = 193,044,586.77
  5. Step 5: Solve for x
    x = 193,044,586.77/13,530.72
  6. Step 6: Final answer
    x = 14,267.13

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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.