Home / 31,457.60-43,411.20-17,117.12

Finding the Fourth Proportional to 31,457.60, 43,411.20 and 17,117.12

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Solution

The fourth proportional to 31,457.60, 43,411.20 and 17,117.12 is: 23,621.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,457.60 : 43,411.20 = 17,117.12 : x
  2. Step 2: Convert to fraction form
    31,457.60/43,411.20 = 17,117.12/x
  3. Step 3: Cross multiply
    31,457.60x = 43,411.20 × 17,117.12
  4. Step 4: Simplify right side
    31,457.60x = 743,074,719.74
  5. Step 5: Solve for x
    x = 743,074,719.74/31,457.60
  6. Step 6: Final answer
    x = 23,621.47

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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.