Home / 22,742.89-31,384.51-12,670.71

Finding the Fourth Proportional to 22,742.89, 31,384.51 and 12,670.71

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Solution

The fourth proportional to 22,742.89, 31,384.51 and 12,670.71 is: 17,485.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,742.89 : 31,384.51 = 12,670.71 : x
  2. Step 2: Convert to fraction form
    22,742.89/31,384.51 = 12,670.71/x
  3. Step 3: Cross multiply
    22,742.89x = 31,384.51 × 12,670.71
  4. Step 4: Simplify right side
    22,742.89x = 397,663,875.33
  5. Step 5: Solve for x
    x = 397,663,875.33/22,742.89
  6. Step 6: Final answer
    x = 17,485.20

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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.