Home / 28,508.06-39,343.50-18,931.02

Finding the Fourth Proportional to 28,508.06, 39,343.50 and 18,931.02

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Solution

The fourth proportional to 28,508.06, 39,343.50 and 18,931.02 is: 26,126.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,508.06 : 39,343.50 = 18,931.02 : x
  2. Step 2: Convert to fraction form
    28,508.06/39,343.50 = 18,931.02/x
  3. Step 3: Cross multiply
    28,508.06x = 39,343.50 × 18,931.02
  4. Step 4: Simplify right side
    28,508.06x = 744,812,585.37
  5. Step 5: Solve for x
    x = 744,812,585.37/28,508.06
  6. Step 6: Final answer
    x = 26,126.39

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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.