Home / 15,457.18-21,331.20-9,485.86

Finding the Fourth Proportional to 15,457.18, 21,331.20 and 9,485.86

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Solution

The fourth proportional to 15,457.18, 21,331.20 and 9,485.86 is: 13,090.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,457.18 : 21,331.20 = 9,485.86 : x
  2. Step 2: Convert to fraction form
    15,457.18/21,331.20 = 9,485.86/x
  3. Step 3: Cross multiply
    15,457.18x = 21,331.20 × 9,485.86
  4. Step 4: Simplify right side
    15,457.18x = 202,344,776.83
  5. Step 5: Solve for x
    x = 202,344,776.83/15,457.18
  6. Step 6: Final answer
    x = 13,090.67

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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.