Home / 42,323.16-63,484.20-12,739.80

Finding the Fourth Proportional to 42,323.16, 63,484.20 and 12,739.80

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Solution

The fourth proportional to 42,323.16, 63,484.20 and 12,739.80 is: 19,109.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,323.16 : 63,484.20 = 12,739.80 : x
  2. Step 2: Convert to fraction form
    42,323.16/63,484.20 = 12,739.80/x
  3. Step 3: Cross multiply
    42,323.16x = 63,484.20 × 12,739.80
  4. Step 4: Simplify right side
    42,323.16x = 808,776,011.16
  5. Step 5: Solve for x
    x = 808,776,011.16/42,323.16
  6. Step 6: Final answer
    x = 19,109.54

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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.