Home / 12,491.02-17,235.66-7,709.50

Finding the Fourth Proportional to 12,491.02, 17,235.66 and 7,709.50

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Solution

The fourth proportional to 12,491.02, 17,235.66 and 7,709.50 is: 10,637.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,491.02 : 17,235.66 = 7,709.50 : x
  2. Step 2: Convert to fraction form
    12,491.02/17,235.66 = 7,709.50/x
  3. Step 3: Cross multiply
    12,491.02x = 17,235.66 × 7,709.50
  4. Step 4: Simplify right side
    12,491.02x = 132,878,320.77
  5. Step 5: Solve for x
    x = 132,878,320.77/12,491.02
  6. Step 6: Final answer
    x = 10,637.91

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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.