Home / 25,920,030.80-38,880,046.20-21,133,125.20

Finding the Fourth Proportional to 25,920,030.80, 38,880,046.20 and 21,133,125.20

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Solution

The fourth proportional to 25,920,030.80, 38,880,046.20 and 21,133,125.20 is: 31,699,687.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,920,030.80 : 38,880,046.20 = 21,133,125.20 : x
  2. Step 2: Convert to fraction form
    25,920,030.80/38,880,046.20 = 21,133,125.20/x
  3. Step 3: Cross multiply
    25,920,030.80x = 38,880,046.20 × 21,133,125.20
  4. Step 4: Simplify right side
    25,920,030.80x = 821,656,884,126,384.25
  5. Step 5: Solve for x
    x = 821,656,884,126,384.25/25,920,030.80
  6. Step 6: Final answer
    x = 31,699,687.80

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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.