Home / 28,431.56-42,656.77-8,710.31

Finding the Fourth Proportional to 28,431.56, 42,656.77 and 8,710.31

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Solution

The fourth proportional to 28,431.56, 42,656.77 and 8,710.31 is: 13,068.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,431.56 : 42,656.77 = 8,710.31 : x
  2. Step 2: Convert to fraction form
    28,431.56/42,656.77 = 8,710.31/x
  3. Step 3: Cross multiply
    28,431.56x = 42,656.77 × 8,710.31
  4. Step 4: Simplify right side
    28,431.56x = 371,553,477.01
  5. Step 5: Solve for x
    x = 371,553,477.01/28,431.56
  6. Step 6: Final answer
    x = 13,068.35

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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.