Home / 10,430.63-14,394.60-5,715.21

Finding the Fourth Proportional to 10,430.63, 14,394.60 and 5,715.21

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Solution

The fourth proportional to 10,430.63, 14,394.60 and 5,715.21 is: 7,887.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,430.63 : 14,394.60 = 5,715.21 : x
  2. Step 2: Convert to fraction form
    10,430.63/14,394.60 = 5,715.21/x
  3. Step 3: Cross multiply
    10,430.63x = 14,394.60 × 5,715.21
  4. Step 4: Simplify right side
    10,430.63x = 82,268,161.87
  5. Step 5: Solve for x
    x = 82,268,161.87/10,430.63
  6. Step 6: Final answer
    x = 7,887.17

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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.