Home / 39,430.98-59,139.90-11,722.50

Finding the Fourth Proportional to 39,430.98, 59,139.90 and 11,722.50

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Solution

The fourth proportional to 39,430.98, 59,139.90 and 11,722.50 is: 17,581.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,430.98 : 59,139.90 = 11,722.50 : x
  2. Step 2: Convert to fraction form
    39,430.98/59,139.90 = 11,722.50/x
  3. Step 3: Cross multiply
    39,430.98x = 59,139.90 × 11,722.50
  4. Step 4: Simplify right side
    39,430.98x = 693,267,477.75
  5. Step 5: Solve for x
    x = 693,267,477.75/39,430.98
  6. Step 6: Final answer
    x = 17,581.80

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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.