Home / 11,051.79-15,230.47-7,902.51

Finding the Fourth Proportional to 11,051.79, 15,230.47 and 7,902.51

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Solution

The fourth proportional to 11,051.79, 15,230.47 and 7,902.51 is: 10,890.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,051.79 : 15,230.47 = 7,902.51 : x
  2. Step 2: Convert to fraction form
    11,051.79/15,230.47 = 7,902.51/x
  3. Step 3: Cross multiply
    11,051.79x = 15,230.47 × 7,902.51
  4. Step 4: Simplify right side
    11,051.79x = 120,358,941.48
  5. Step 5: Solve for x
    x = 120,358,941.48/11,051.79
  6. Step 6: Final answer
    x = 10,890.45

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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.