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Finding the Fourth Proportional to 28,235.10, 42,341.89 and 9,510.11

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Solution

The fourth proportional to 28,235.10, 42,341.89 and 9,510.11 is: 14,261.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,235.10 : 42,341.89 = 9,510.11 : x
  2. Step 2: Convert to fraction form
    28,235.10/42,341.89 = 9,510.11/x
  3. Step 3: Cross multiply
    28,235.10x = 42,341.89 × 9,510.11
  4. Step 4: Simplify right side
    28,235.10x = 402,676,031.51
  5. Step 5: Solve for x
    x = 402,676,031.51/28,235.10
  6. Step 6: Final answer
    x = 14,261.54

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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.