Home / 15,155.82-20,898.32-10,376.55

Finding the Fourth Proportional to 15,155.82, 20,898.32 and 10,376.55

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Solution

The fourth proportional to 15,155.82, 20,898.32 and 10,376.55 is: 14,308.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,155.82 : 20,898.32 = 10,376.55 : x
  2. Step 2: Convert to fraction form
    15,155.82/20,898.32 = 10,376.55/x
  3. Step 3: Cross multiply
    15,155.82x = 20,898.32 × 10,376.55
  4. Step 4: Simplify right side
    15,155.82x = 216,852,410.51
  5. Step 5: Solve for x
    x = 216,852,410.51/15,155.82
  6. Step 6: Final answer
    x = 14,308.19

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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.