Home / 10,009.15-13,817.21-7,140.07

Finding the Fourth Proportional to 10,009.15, 13,817.21 and 7,140.07

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Solution

The fourth proportional to 10,009.15, 13,817.21 and 7,140.07 is: 9,856.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,009.15 : 13,817.21 = 7,140.07 : x
  2. Step 2: Convert to fraction form
    10,009.15/13,817.21 = 7,140.07/x
  3. Step 3: Cross multiply
    10,009.15x = 13,817.21 × 7,140.07
  4. Step 4: Simplify right side
    10,009.15x = 98,655,828.18
  5. Step 5: Solve for x
    x = 98,655,828.18/10,009.15
  6. Step 6: Final answer
    x = 9,856.57

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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.