Home / 28,428.95-42,643.56-8,707.49

Finding the Fourth Proportional to 28,428.95, 42,643.56 and 8,707.49

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Solution

The fourth proportional to 28,428.95, 42,643.56 and 8,707.49 is: 13,061.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,428.95 : 42,643.56 = 8,707.49 : x
  2. Step 2: Convert to fraction form
    28,428.95/42,643.56 = 8,707.49/x
  3. Step 3: Cross multiply
    28,428.95x = 42,643.56 × 8,707.49
  4. Step 4: Simplify right side
    28,428.95x = 371,318,372.26
  5. Step 5: Solve for x
    x = 371,318,372.26/28,428.95
  6. Step 6: Final answer
    x = 13,061.28

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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.