Home / 12,985.02-19,477.56-7,434.54

Finding the Fourth Proportional to 12,985.02, 19,477.56 and 7,434.54

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Solution

The fourth proportional to 12,985.02, 19,477.56 and 7,434.54 is: 11,151.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,985.02 : 19,477.56 = 7,434.54 : x
  2. Step 2: Convert to fraction form
    12,985.02/19,477.56 = 7,434.54/x
  3. Step 3: Cross multiply
    12,985.02x = 19,477.56 × 7,434.54
  4. Step 4: Simplify right side
    12,985.02x = 144,806,698.92
  5. Step 5: Solve for x
    x = 144,806,698.92/12,985.02
  6. Step 6: Final answer
    x = 11,151.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.