Home / 14,139.95-19,512.34-7,767.36

Finding the Fourth Proportional to 14,139.95, 19,512.34 and 7,767.36

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Solution

The fourth proportional to 14,139.95, 19,512.34 and 7,767.36 is: 10,718.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,139.95 : 19,512.34 = 7,767.36 : x
  2. Step 2: Convert to fraction form
    14,139.95/19,512.34 = 7,767.36/x
  3. Step 3: Cross multiply
    14,139.95x = 19,512.34 × 7,767.36
  4. Step 4: Simplify right side
    14,139.95x = 151,559,349.80
  5. Step 5: Solve for x
    x = 151,559,349.80/14,139.95
  6. Step 6: Final answer
    x = 10,718.52

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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.