Home / 25,320.72-34,943.64-13,990.80

Finding the Fourth Proportional to 25,320.72, 34,943.64 and 13,990.80

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Solution

The fourth proportional to 25,320.72, 34,943.64 and 13,990.80 is: 19,307.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,320.72 : 34,943.64 = 13,990.80 : x
  2. Step 2: Convert to fraction form
    25,320.72/34,943.64 = 13,990.80/x
  3. Step 3: Cross multiply
    25,320.72x = 34,943.64 × 13,990.80
  4. Step 4: Simplify right side
    25,320.72x = 488,889,478.51
  5. Step 5: Solve for x
    x = 488,889,478.51/25,320.72
  6. Step 6: Final answer
    x = 19,307.88

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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.