Home / 21,275,148,912.40-31,912,723,368.60-20,984,911,267.60

Finding the Fourth Proportional to 21,275,148,912.40, 31,912,723,368.60 and 20,984,911,267.60

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Solution

The fourth proportional to 21,275,148,912.40, 31,912,723,368.60 and 20,984,911,267.60 is: 31,477,366,901.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275,148,912.40 : 31,912,723,368.60 = 20,984,911,267.60 : x
  2. Step 2: Convert to fraction form
    21,275,148,912.40/31,912,723,368.60 = 20,984,911,267.60/x
  3. Step 3: Cross multiply
    21,275,148,912.40x = 31,912,723,368.60 × 20,984,911,267.60
  4. Step 4: Simplify right side
    21,275,148,912.40x = 669,685,668,197,535,842,304
  5. Step 5: Solve for x
    x = 669,685,668,197,535,842,304/21,275,148,912.40
  6. Step 6: Final answer
    x = 31,477,366,901.40

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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.