Home / 28,250.16-42,347.67-13,455.12

Finding the Fourth Proportional to 28,250.16, 42,347.67 and 13,455.12

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Solution

The fourth proportional to 28,250.16, 42,347.67 and 13,455.12 is: 20,169.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,250.16 : 42,347.67 = 13,455.12 : x
  2. Step 2: Convert to fraction form
    28,250.16/42,347.67 = 13,455.12/x
  3. Step 3: Cross multiply
    28,250.16x = 42,347.67 × 13,455.12
  4. Step 4: Simplify right side
    28,250.16x = 569,792,981.57
  5. Step 5: Solve for x
    x = 569,792,981.57/28,250.16
  6. Step 6: Final answer
    x = 20,169.55

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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.