Home / 37,980.64-52,416.96-20,988.88

Finding the Fourth Proportional to 37,980.64, 52,416.96 and 20,988.88

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Solution

The fourth proportional to 37,980.64, 52,416.96 and 20,988.88 is: 28,966.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,980.64 : 52,416.96 = 20,988.88 : x
  2. Step 2: Convert to fraction form
    37,980.64/52,416.96 = 20,988.88/x
  3. Step 3: Cross multiply
    37,980.64x = 52,416.96 × 20,988.88
  4. Step 4: Simplify right side
    37,980.64x = 1,100,173,283.40
  5. Step 5: Solve for x
    x = 1,100,173,283.40/37,980.64
  6. Step 6: Final answer
    x = 28,966.69

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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.