Home / 38,740.81-58,062.48-20,970.76

Finding the Fourth Proportional to 38,740.81, 58,062.48 and 20,970.76

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Solution

The fourth proportional to 38,740.81, 58,062.48 and 20,970.76 is: 31,429.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,740.81 : 58,062.48 = 20,970.76 : x
  2. Step 2: Convert to fraction form
    38,740.81/58,062.48 = 20,970.76/x
  3. Step 3: Cross multiply
    38,740.81x = 58,062.48 × 20,970.76
  4. Step 4: Simplify right side
    38,740.81x = 1,217,614,333.08
  5. Step 5: Solve for x
    x = 1,217,614,333.08/38,740.81
  6. Step 6: Final answer
    x = 31,429.76

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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.