Home / 19,943.20-29,870.64-10,554.40

Finding the Fourth Proportional to 19,943.20, 29,870.64 and 10,554.40

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Solution

The fourth proportional to 19,943.20, 29,870.64 and 10,554.40 is: 15,808.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,943.20 : 29,870.64 = 10,554.40 : x
  2. Step 2: Convert to fraction form
    19,943.20/29,870.64 = 10,554.40/x
  3. Step 3: Cross multiply
    19,943.20x = 29,870.64 × 10,554.40
  4. Step 4: Simplify right side
    19,943.20x = 315,266,682.82
  5. Step 5: Solve for x
    x = 315,266,682.82/19,943.20
  6. Step 6: Final answer
    x = 15,808.23

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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.