Home / 28,302.40-42,426.60-10,528.30

Finding the Fourth Proportional to 28,302.40, 42,426.60 and 10,528.30

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Solution

The fourth proportional to 28,302.40, 42,426.60 and 10,528.30 is: 15,782.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,302.40 : 42,426.60 = 10,528.30 : x
  2. Step 2: Convert to fraction form
    28,302.40/42,426.60 = 10,528.30/x
  3. Step 3: Cross multiply
    28,302.40x = 42,426.60 × 10,528.30
  4. Step 4: Simplify right side
    28,302.40x = 446,679,972.78
  5. Step 5: Solve for x
    x = 446,679,972.78/28,302.40
  6. Step 6: Final answer
    x = 15,782.41

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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.