Home / 31,655.16-43,688.64-18,225.06

Finding the Fourth Proportional to 31,655.16, 43,688.64 and 18,225.06

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Solution

The fourth proportional to 31,655.16, 43,688.64 and 18,225.06 is: 25,153.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,655.16 : 43,688.64 = 18,225.06 : x
  2. Step 2: Convert to fraction form
    31,655.16/43,688.64 = 18,225.06/x
  3. Step 3: Cross multiply
    31,655.16x = 43,688.64 × 18,225.06
  4. Step 4: Simplify right side
    31,655.16x = 796,228,085.32
  5. Step 5: Solve for x
    x = 796,228,085.32/31,655.16
  6. Step 6: Final answer
    x = 25,153.18

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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.