Home / 25,643.10-38,457.45-8,118.30

Finding the Fourth Proportional to 25,643.10, 38,457.45 and 8,118.30

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Solution

The fourth proportional to 25,643.10, 38,457.45 and 8,118.30 is: 12,175.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,643.10 : 38,457.45 = 8,118.30 : x
  2. Step 2: Convert to fraction form
    25,643.10/38,457.45 = 8,118.30/x
  3. Step 3: Cross multiply
    25,643.10x = 38,457.45 × 8,118.30
  4. Step 4: Simplify right side
    25,643.10x = 312,209,116.34
  5. Step 5: Solve for x
    x = 312,209,116.34/25,643.10
  6. Step 6: Final answer
    x = 12,175.17

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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.