Home / 20,553,779.16-28,362,148.38-11,384,708.76

Finding the Fourth Proportional to 20,553,779.16, 28,362,148.38 and 11,384,708.76

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Solution

The fourth proportional to 20,553,779.16, 28,362,148.38 and 11,384,708.76 is: 15,709,753.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,553,779.16 : 28,362,148.38 = 11,384,708.76 : x
  2. Step 2: Convert to fraction form
    20,553,779.16/28,362,148.38 = 11,384,708.76/x
  3. Step 3: Cross multiply
    20,553,779.16x = 28,362,148.38 × 11,384,708.76
  4. Step 4: Simplify right side
    20,553,779.16x = 322,894,799,114,205.81
  5. Step 5: Solve for x
    x = 322,894,799,114,205.81/20,553,779.16
  6. Step 6: Final answer
    x = 15,709,753.26

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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.