Home / 21,022,200.30-31,533,300.45-12,377,426.70

Finding the Fourth Proportional to 21,022,200.30, 31,533,300.45 and 12,377,426.70

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Solution

The fourth proportional to 21,022,200.30, 31,533,300.45 and 12,377,426.70 is: 18,566,140.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,022,200.30 : 31,533,300.45 = 12,377,426.70 : x
  2. Step 2: Convert to fraction form
    21,022,200.30/31,533,300.45 = 12,377,426.70/x
  3. Step 3: Cross multiply
    21,022,200.30x = 31,533,300.45 × 12,377,426.70
  4. Step 4: Simplify right side
    21,022,200.30x = 390,301,114,928,952
  5. Step 5: Solve for x
    x = 390,301,114,928,952/21,022,200.30
  6. Step 6: Final answer
    x = 18,566,140.05

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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.