Home / 29,681.12-40,987.72-19,089.16

Finding the Fourth Proportional to 29,681.12, 40,987.72 and 19,089.16

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Solution

The fourth proportional to 29,681.12, 40,987.72 and 19,089.16 is: 26,360.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,681.12 : 40,987.72 = 19,089.16 : x
  2. Step 2: Convert to fraction form
    29,681.12/40,987.72 = 19,089.16/x
  3. Step 3: Cross multiply
    29,681.12x = 40,987.72 × 19,089.16
  4. Step 4: Simplify right side
    29,681.12x = 782,421,145.12
  5. Step 5: Solve for x
    x = 782,421,145.12/29,681.12
  6. Step 6: Final answer
    x = 26,360.90

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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.