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Finding the Fourth Proportional to 42,795.51, 64,191.51 and 11,205.06

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Solution

The fourth proportional to 42,795.51, 64,191.51 and 11,205.06 is: 16,807.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,795.51 : 64,191.51 = 11,205.06 : x
  2. Step 2: Convert to fraction form
    42,795.51/64,191.51 = 11,205.06/x
  3. Step 3: Cross multiply
    42,795.51x = 64,191.51 × 11,205.06
  4. Step 4: Simplify right side
    42,795.51x = 719,269,721.04
  5. Step 5: Solve for x
    x = 719,269,721.04/42,795.51
  6. Step 6: Final answer
    x = 16,807.13

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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.