Home / 40,134.61-55,386.43-21,985.07

Finding the Fourth Proportional to 40,134.61, 55,386.43 and 21,985.07

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Solution

The fourth proportional to 40,134.61, 55,386.43 and 21,985.07 is: 30,339.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,134.61 : 55,386.43 = 21,985.07 : x
  2. Step 2: Convert to fraction form
    40,134.61/55,386.43 = 21,985.07/x
  3. Step 3: Cross multiply
    40,134.61x = 55,386.43 × 21,985.07
  4. Step 4: Simplify right side
    40,134.61x = 1,217,674,643.92
  5. Step 5: Solve for x
    x = 1,217,674,643.92/40,134.61
  6. Step 6: Final answer
    x = 30,339.76

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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.