Home / 39,981.64-59,886.06-20,213.32

Finding the Fourth Proportional to 39,981.64, 59,886.06 and 20,213.32

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Solution

The fourth proportional to 39,981.64, 59,886.06 and 20,213.32 is: 30,276.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,981.64 : 59,886.06 = 20,213.32 : x
  2. Step 2: Convert to fraction form
    39,981.64/59,886.06 = 20,213.32/x
  3. Step 3: Cross multiply
    39,981.64x = 59,886.06 × 20,213.32
  4. Step 4: Simplify right side
    39,981.64x = 1,210,496,094.32
  5. Step 5: Solve for x
    x = 1,210,496,094.32/39,981.64
  6. Step 6: Final answer
    x = 30,276.30

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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.