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Finding the Fourth Proportional to 28,038.98, 42,051.15 and 8,312.24

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Solution

The fourth proportional to 28,038.98, 42,051.15 and 8,312.24 is: 12,466.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,038.98 : 42,051.15 = 8,312.24 : x
  2. Step 2: Convert to fraction form
    28,038.98/42,051.15 = 8,312.24/x
  3. Step 3: Cross multiply
    28,038.98x = 42,051.15 × 8,312.24
  4. Step 4: Simplify right side
    28,038.98x = 349,539,251.08
  5. Step 5: Solve for x
    x = 349,539,251.08/28,038.98
  6. Step 6: Final answer
    x = 12,466.19

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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.