Home / 28,217.40-42,423.70-26,390.20

Finding the Fourth Proportional to 28,217.40, 42,423.70 and 26,390.20

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Solution

The fourth proportional to 28,217.40, 42,423.70 and 26,390.20 is: 39,676.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,217.40 : 42,423.70 = 26,390.20 : x
  2. Step 2: Convert to fraction form
    28,217.40/42,423.70 = 26,390.20/x
  3. Step 3: Cross multiply
    28,217.40x = 42,423.70 × 26,390.20
  4. Step 4: Simplify right side
    28,217.40x = 1,119,569,927.74
  5. Step 5: Solve for x
    x = 1,119,569,927.74/28,217.40
  6. Step 6: Final answer
    x = 39,676.58

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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.