Home / 13,409.10-18,498.60-9,432.81

Finding the Fourth Proportional to 13,409.10, 18,498.60 and 9,432.81

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Solution

The fourth proportional to 13,409.10, 18,498.60 and 9,432.81 is: 13,013.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,409.10 : 18,498.60 = 9,432.81 : x
  2. Step 2: Convert to fraction form
    13,409.10/18,498.60 = 9,432.81/x
  3. Step 3: Cross multiply
    13,409.10x = 18,498.60 × 9,432.81
  4. Step 4: Simplify right side
    13,409.10x = 174,493,779.07
  5. Step 5: Solve for x
    x = 174,493,779.07/13,409.10
  6. Step 6: Final answer
    x = 13,013.09

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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.