Home / 10,805.30-14,901.40-7,407.25

Finding the Fourth Proportional to 10,805.30, 14,901.40 and 7,407.25

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Solution

The fourth proportional to 10,805.30, 14,901.40 and 7,407.25 is: 10,215.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,805.30 : 14,901.40 = 7,407.25 : x
  2. Step 2: Convert to fraction form
    10,805.30/14,901.40 = 7,407.25/x
  3. Step 3: Cross multiply
    10,805.30x = 14,901.40 × 7,407.25
  4. Step 4: Simplify right side
    10,805.30x = 110,378,339.38
  5. Step 5: Solve for x
    x = 110,378,339.38/10,805.30
  6. Step 6: Final answer
    x = 10,215.21

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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.