Home / 29,345.40-40,488.12-19,139.40

Finding the Fourth Proportional to 29,345.40, 40,488.12 and 19,139.40

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Solution

The fourth proportional to 29,345.40, 40,488.12 and 19,139.40 is: 26,406.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,345.40 : 40,488.12 = 19,139.40 : x
  2. Step 2: Convert to fraction form
    29,345.40/40,488.12 = 19,139.40/x
  3. Step 3: Cross multiply
    29,345.40x = 40,488.12 × 19,139.40
  4. Step 4: Simplify right side
    29,345.40x = 774,918,323.93
  5. Step 5: Solve for x
    x = 774,918,323.93/29,345.40
  6. Step 6: Final answer
    x = 26,406.81

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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.