Home / 28,637.81-42,946.40-9,912.75

Finding the Fourth Proportional to 28,637.81, 42,946.40 and 9,912.75

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Solution

The fourth proportional to 28,637.81, 42,946.40 and 9,912.75 is: 14,865.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,637.81 : 42,946.40 = 9,912.75 : x
  2. Step 2: Convert to fraction form
    28,637.81/42,946.40 = 9,912.75/x
  3. Step 3: Cross multiply
    28,637.81x = 42,946.40 × 9,912.75
  4. Step 4: Simplify right side
    28,637.81x = 425,716,877.04
  5. Step 5: Solve for x
    x = 425,716,877.04/28,637.81
  6. Step 6: Final answer
    x = 14,865.56

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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.