Home / 13,079.08-17,970.36-10,421.87

Finding the Fourth Proportional to 13,079.08, 17,970.36 and 10,421.87

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Solution

The fourth proportional to 13,079.08, 17,970.36 and 10,421.87 is: 14,319.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,079.08 : 17,970.36 = 10,421.87 : x
  2. Step 2: Convert to fraction form
    13,079.08/17,970.36 = 10,421.87/x
  3. Step 3: Cross multiply
    13,079.08x = 17,970.36 × 10,421.87
  4. Step 4: Simplify right side
    13,079.08x = 187,284,800.70
  5. Step 5: Solve for x
    x = 187,284,800.70/13,079.08
  6. Step 6: Final answer
    x = 14,319.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.