Home / 12,378.77-17,082.47-7,001.12

Finding the Fourth Proportional to 12,378.77, 17,082.47 and 7,001.12

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Solution

The fourth proportional to 12,378.77, 17,082.47 and 7,001.12 is: 9,661.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,378.77 : 17,082.47 = 7,001.12 : x
  2. Step 2: Convert to fraction form
    12,378.77/17,082.47 = 7,001.12/x
  3. Step 3: Cross multiply
    12,378.77x = 17,082.47 × 7,001.12
  4. Step 4: Simplify right side
    12,378.77x = 119,596,354.46
  5. Step 5: Solve for x
    x = 119,596,354.46/12,378.77
  6. Step 6: Final answer
    x = 9,661.41

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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.