Home / 39,703.20-59,457.60-18,902.40

Finding the Fourth Proportional to 39,703.20, 59,457.60 and 18,902.40

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Solution

The fourth proportional to 39,703.20, 59,457.60 and 18,902.40 is: 28,307.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,703.20 : 59,457.60 = 18,902.40 : x
  2. Step 2: Convert to fraction form
    39,703.20/59,457.60 = 18,902.40/x
  3. Step 3: Cross multiply
    39,703.20x = 59,457.60 × 18,902.40
  4. Step 4: Simplify right side
    39,703.20x = 1,123,891,338.24
  5. Step 5: Solve for x
    x = 1,123,891,338.24/39,703.20
  6. Step 6: Final answer
    x = 28,307.32

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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.