Home / 13,715.04-20,559.60-12,457.92

Finding the Fourth Proportional to 13,715.04, 20,559.60 and 12,457.92

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Solution

The fourth proportional to 13,715.04, 20,559.60 and 12,457.92 is: 18,675.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,715.04 : 20,559.60 = 12,457.92 : x
  2. Step 2: Convert to fraction form
    13,715.04/20,559.60 = 12,457.92/x
  3. Step 3: Cross multiply
    13,715.04x = 20,559.60 × 12,457.92
  4. Step 4: Simplify right side
    13,715.04x = 256,129,852.03
  5. Step 5: Solve for x
    x = 256,129,852.03/13,715.04
  6. Step 6: Final answer
    x = 18,675.11

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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.