Home / 28,130.84-42,217.03-13,339.81

Finding the Fourth Proportional to 28,130.84, 42,217.03 and 13,339.81

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Solution

The fourth proportional to 28,130.84, 42,217.03 and 13,339.81 is: 20,019.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,130.84 : 42,217.03 = 13,339.81 : x
  2. Step 2: Convert to fraction form
    28,130.84/42,217.03 = 13,339.81/x
  3. Step 3: Cross multiply
    28,130.84x = 42,217.03 × 13,339.81
  4. Step 4: Simplify right side
    28,130.84x = 563,166,915.90
  5. Step 5: Solve for x
    x = 563,166,915.90/28,130.84
  6. Step 6: Final answer
    x = 20,019.56

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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.