Home / 20,689,681.70-31,034,522.55-18,417,771.43

Finding the Fourth Proportional to 20,689,681.70, 31,034,522.55 and 18,417,771.43

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Solution

The fourth proportional to 20,689,681.70, 31,034,522.55 and 18,417,771.43 is: 27,626,657.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,689,681.70 : 31,034,522.55 = 18,417,771.43 : x
  2. Step 2: Convert to fraction form
    20,689,681.70/31,034,522.55 = 18,417,771.43/x
  3. Step 3: Cross multiply
    20,689,681.70x = 31,034,522.55 × 18,417,771.43
  4. Step 4: Simplify right side
    20,689,681.70x = 571,586,742,609,908.12
  5. Step 5: Solve for x
    x = 571,586,742,609,908.12/20,689,681.70
  6. Step 6: Final answer
    x = 27,626,657.14

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1.5x scale

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.