Home / 42,807.60-64,211.40-13,222.80

Finding the Fourth Proportional to 42,807.60, 64,211.40 and 13,222.80

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Solution

The fourth proportional to 42,807.60, 64,211.40 and 13,222.80 is: 19,834.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,807.60 : 64,211.40 = 13,222.80 : x
  2. Step 2: Convert to fraction form
    42,807.60/64,211.40 = 13,222.80/x
  3. Step 3: Cross multiply
    42,807.60x = 64,211.40 × 13,222.80
  4. Step 4: Simplify right side
    42,807.60x = 849,054,499.92
  5. Step 5: Solve for x
    x = 849,054,499.92/42,807.60
  6. Step 6: Final answer
    x = 19,834.20

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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.