Home / 19,888.72-29,840.36-10,535.64

Finding the Fourth Proportional to 19,888.72, 29,840.36 and 10,535.64

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Solution

The fourth proportional to 19,888.72, 29,840.36 and 10,535.64 is: 15,807.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,888.72 : 29,840.36 = 10,535.64 : x
  2. Step 2: Convert to fraction form
    19,888.72/29,840.36 = 10,535.64/x
  3. Step 3: Cross multiply
    19,888.72x = 29,840.36 × 10,535.64
  4. Step 4: Simplify right side
    19,888.72x = 314,387,290.43
  5. Step 5: Solve for x
    x = 314,387,290.43/19,888.72
  6. Step 6: Final answer
    x = 15,807.32

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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.