Home / 40,931.70-61,397.55-21,216.30

Finding the Fourth Proportional to 40,931.70, 61,397.55 and 21,216.30

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Solution

The fourth proportional to 40,931.70, 61,397.55 and 21,216.30 is: 31,824.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,931.70 : 61,397.55 = 21,216.30 : x
  2. Step 2: Convert to fraction form
    40,931.70/61,397.55 = 21,216.30/x
  3. Step 3: Cross multiply
    40,931.70x = 61,397.55 × 21,216.30
  4. Step 4: Simplify right side
    40,931.70x = 1,302,628,840.07
  5. Step 5: Solve for x
    x = 1,302,628,840.07/40,931.70
  6. Step 6: Final answer
    x = 31,824.45

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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.