Home / 20,310,688.59-28,021,394.58-13,345,117.70

Finding the Fourth Proportional to 20,310,688.59, 28,021,394.58 and 13,345,117.70

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Solution

The fourth proportional to 20,310,688.59, 28,021,394.58 and 13,345,117.70 is: 18,411,429.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,310,688.59 : 28,021,394.58 = 13,345,117.70 : x
  2. Step 2: Convert to fraction form
    20,310,688.59/28,021,394.58 = 13,345,117.70/x
  3. Step 3: Cross multiply
    20,310,688.59x = 28,021,394.58 × 13,345,117.70
  4. Step 4: Simplify right side
    20,310,688.59x = 373,948,808,648,135.06
  5. Step 5: Solve for x
    x = 373,948,808,648,135.06/20,310,688.59
  6. Step 6: Final answer
    x = 18,411,429.38

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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.