Home / 22,528.20-31,091.16-12,457.40

Finding the Fourth Proportional to 22,528.20, 31,091.16 and 12,457.40

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Solution

The fourth proportional to 22,528.20, 31,091.16 and 12,457.40 is: 17,192.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,528.20 : 31,091.16 = 12,457.40 : x
  2. Step 2: Convert to fraction form
    22,528.20/31,091.16 = 12,457.40/x
  3. Step 3: Cross multiply
    22,528.20x = 31,091.16 × 12,457.40
  4. Step 4: Simplify right side
    22,528.20x = 387,315,016.58
  5. Step 5: Solve for x
    x = 387,315,016.58/22,528.20
  6. Step 6: Final answer
    x = 17,192.45

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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.