Home / 22,501.80-31,065.72-15,438.60

Finding the Fourth Proportional to 22,501.80, 31,065.72 and 15,438.60

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Solution

The fourth proportional to 22,501.80, 31,065.72 and 15,438.60 is: 21,314.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,501.80 : 31,065.72 = 15,438.60 : x
  2. Step 2: Convert to fraction form
    22,501.80/31,065.72 = 15,438.60/x
  3. Step 3: Cross multiply
    22,501.80x = 31,065.72 × 15,438.60
  4. Step 4: Simplify right side
    22,501.80x = 479,611,224.79
  5. Step 5: Solve for x
    x = 479,611,224.79/22,501.80
  6. Step 6: Final answer
    x = 21,314.35

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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.