Home / 20,453,628.72-28,225,182.60-11,286,152.40

Finding the Fourth Proportional to 20,453,628.72, 28,225,182.60 and 11,286,152.40

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Solution

The fourth proportional to 20,453,628.72, 28,225,182.60 and 11,286,152.40 is: 15,574,435.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,453,628.72 : 28,225,182.60 = 11,286,152.40 : x
  2. Step 2: Convert to fraction form
    20,453,628.72/28,225,182.60 = 11,286,152.40/x
  3. Step 3: Cross multiply
    20,453,628.72x = 28,225,182.60 × 11,286,152.40
  4. Step 4: Simplify right side
    20,453,628.72x = 318,553,712,341,428.25
  5. Step 5: Solve for x
    x = 318,553,712,341,428.25/20,453,628.72
  6. Step 6: Final answer
    x = 15,574,435.06

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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.