Home / 43,276.40-64,938.90-18,312.20

Finding the Fourth Proportional to 43,276.40, 64,938.90 and 18,312.20

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Solution

The fourth proportional to 43,276.40, 64,938.90 and 18,312.20 is: 27,478.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,276.40 : 64,938.90 = 18,312.20 : x
  2. Step 2: Convert to fraction form
    43,276.40/64,938.90 = 18,312.20/x
  3. Step 3: Cross multiply
    43,276.40x = 64,938.90 × 18,312.20
  4. Step 4: Simplify right side
    43,276.40x = 1,189,174,124.58
  5. Step 5: Solve for x
    x = 1,189,174,124.58/43,276.40
  6. Step 6: Final answer
    x = 27,478.58

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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.