Home / 10,905.27-15,045.36-7,130.60

Finding the Fourth Proportional to 10,905.27, 15,045.36 and 7,130.60

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Solution

The fourth proportional to 10,905.27, 15,045.36 and 7,130.60 is: 9,837.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,905.27 : 15,045.36 = 7,130.60 : x
  2. Step 2: Convert to fraction form
    10,905.27/15,045.36 = 7,130.60/x
  3. Step 3: Cross multiply
    10,905.27x = 15,045.36 × 7,130.60
  4. Step 4: Simplify right side
    10,905.27x = 107,282,368.79
  5. Step 5: Solve for x
    x = 107,282,368.79/10,905.27
  6. Step 6: Final answer
    x = 9,837.66

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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.