Home / 13,538.04-20,313.12-8,606.40

Finding the Fourth Proportional to 13,538.04, 20,313.12 and 8,606.40

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Solution

The fourth proportional to 13,538.04, 20,313.12 and 8,606.40 is: 12,913.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,538.04 : 20,313.12 = 8,606.40 : x
  2. Step 2: Convert to fraction form
    13,538.04/20,313.12 = 8,606.40/x
  3. Step 3: Cross multiply
    13,538.04x = 20,313.12 × 8,606.40
  4. Step 4: Simplify right side
    13,538.04x = 174,822,835.97
  5. Step 5: Solve for x
    x = 174,822,835.97/13,538.04
  6. Step 6: Final answer
    x = 12,913.45

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1.5x scale

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.