Home / 28,315.29-42,478.89-11,675.19

Finding the Fourth Proportional to 28,315.29, 42,478.89 and 11,675.19

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Solution

The fourth proportional to 28,315.29, 42,478.89 and 11,675.19 is: 17,515.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,315.29 : 42,478.89 = 11,675.19 : x
  2. Step 2: Convert to fraction form
    28,315.29/42,478.89 = 11,675.19/x
  3. Step 3: Cross multiply
    28,315.29x = 42,478.89 × 11,675.19
  4. Step 4: Simplify right side
    28,315.29x = 495,949,111.74
  5. Step 5: Solve for x
    x = 495,949,111.74/28,315.29
  6. Step 6: Final answer
    x = 17,515.24

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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.