Home / 28,931.65-39,948.32-22,206.62

Finding the Fourth Proportional to 28,931.65, 39,948.32 and 22,206.62

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Solution

The fourth proportional to 28,931.65, 39,948.32 and 22,206.62 is: 30,662.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,931.65 : 39,948.32 = 22,206.62 : x
  2. Step 2: Convert to fraction form
    28,931.65/39,948.32 = 22,206.62/x
  3. Step 3: Cross multiply
    28,931.65x = 39,948.32 × 22,206.62
  4. Step 4: Simplify right side
    28,931.65x = 887,117,317.27
  5. Step 5: Solve for x
    x = 887,117,317.27/28,931.65
  6. Step 6: Final answer
    x = 30,662.52

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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.