Home / 20,023,313.81-30,185,049.50-18,688,555.76

Finding the Fourth Proportional to 20,023,313.81, 30,185,049.50 and 18,688,555.76

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Solution

The fourth proportional to 20,023,313.81, 30,185,049.50 and 18,688,555.76 is: 28,172,908.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,023,313.81 : 30,185,049.50 = 18,688,555.76 : x
  2. Step 2: Convert to fraction form
    20,023,313.81/30,185,049.50 = 18,688,555.76/x
  3. Step 3: Cross multiply
    20,023,313.81x = 30,185,049.50 × 18,688,555.76
  4. Step 4: Simplify right side
    20,023,313.81x = 564,114,980,681,130
  5. Step 5: Solve for x
    x = 564,114,980,681,130/20,023,313.81
  6. Step 6: Final answer
    x = 28,172,908.14

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.