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Finding the Fourth Proportional to 37,455.51, 51,688.47 and 20,688.51

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Solution

The fourth proportional to 37,455.51, 51,688.47 and 20,688.51 is: 28,550.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,455.51 : 51,688.47 = 20,688.51 : x
  2. Step 2: Convert to fraction form
    37,455.51/51,688.47 = 20,688.51/x
  3. Step 3: Cross multiply
    37,455.51x = 51,688.47 × 20,688.51
  4. Step 4: Simplify right side
    37,455.51x = 1,069,357,428.48
  5. Step 5: Solve for x
    x = 1,069,357,428.48/37,455.51
  6. Step 6: Final answer
    x = 28,550.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.