Home / 12,547.93-17,313.29-8,515.30

Finding the Fourth Proportional to 12,547.93, 17,313.29 and 8,515.30

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Solution

The fourth proportional to 12,547.93, 17,313.29 and 8,515.30 is: 11,749.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,547.93 : 17,313.29 = 8,515.30 : x
  2. Step 2: Convert to fraction form
    12,547.93/17,313.29 = 8,515.30/x
  3. Step 3: Cross multiply
    12,547.93x = 17,313.29 × 8,515.30
  4. Step 4: Simplify right side
    12,547.93x = 147,427,933.46
  5. Step 5: Solve for x
    x = 147,427,933.46/12,547.93
  6. Step 6: Final answer
    x = 11,749.19

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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.