Home / 40,078.81-60,126.41-13,780.13

Finding the Fourth Proportional to 40,078.81, 60,126.41 and 13,780.13

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Solution

The fourth proportional to 40,078.81, 60,126.41 and 13,780.13 is: 20,673.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,078.81 : 60,126.41 = 13,780.13 : x
  2. Step 2: Convert to fraction form
    40,078.81/60,126.41 = 13,780.13/x
  3. Step 3: Cross multiply
    40,078.81x = 60,126.41 × 13,780.13
  4. Step 4: Simplify right side
    40,078.81x = 828,549,931.00
  5. Step 5: Solve for x
    x = 828,549,931.00/40,078.81
  6. Step 6: Final answer
    x = 20,673.02

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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.