Home / 31,709.07-43,776.45-21,652.11

Finding the Fourth Proportional to 31,709.07, 43,776.45 and 21,652.11

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Solution

The fourth proportional to 31,709.07, 43,776.45 and 21,652.11 is: 29,892.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,709.07 : 43,776.45 = 21,652.11 : x
  2. Step 2: Convert to fraction form
    31,709.07/43,776.45 = 21,652.11/x
  3. Step 3: Cross multiply
    31,709.07x = 43,776.45 × 21,652.11
  4. Step 4: Simplify right side
    31,709.07x = 947,852,510.81
  5. Step 5: Solve for x
    x = 947,852,510.81/31,709.07
  6. Step 6: Final answer
    x = 29,892.16

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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.