Home / 30,504,898.76-42,109,643.15-20,595,206.20

Finding the Fourth Proportional to 30,504,898.76, 42,109,643.15 and 20,595,206.20

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Solution

The fourth proportional to 30,504,898.76, 42,109,643.15 and 20,595,206.20 is: 28,430,082.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,504,898.76 : 42,109,643.15 = 20,595,206.20 : x
  2. Step 2: Convert to fraction form
    30,504,898.76/42,109,643.15 = 20,595,206.20/x
  3. Step 3: Cross multiply
    30,504,898.76x = 42,109,643.15 × 20,595,206.20
  4. Step 4: Simplify right side
    30,504,898.76x = 867,256,783,474,417.50
  5. Step 5: Solve for x
    x = 867,256,783,474,417.50/30,504,898.76
  6. Step 6: Final answer
    x = 28,430,082.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.