Home / 30,666.60-45,999.90-26,438.40

Finding the Fourth Proportional to 30,666.60, 45,999.90 and 26,438.40

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Solution

The fourth proportional to 30,666.60, 45,999.90 and 26,438.40 is: 39,657.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,666.60 : 45,999.90 = 26,438.40 : x
  2. Step 2: Convert to fraction form
    30,666.60/45,999.90 = 26,438.40/x
  3. Step 3: Cross multiply
    30,666.60x = 45,999.90 × 26,438.40
  4. Step 4: Simplify right side
    30,666.60x = 1,216,163,756.16
  5. Step 5: Solve for x
    x = 1,216,163,756.16/30,666.60
  6. Step 6: Final answer
    x = 39,657.60

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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.