Home / 57,430.04-86,145.20-17,990.60

Finding the Fourth Proportional to 57,430.04, 86,145.20 and 17,990.60

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Solution

The fourth proportional to 57,430.04, 86,145.20 and 17,990.60 is: 26,985.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,430.04 : 86,145.20 = 17,990.60 : x
  2. Step 2: Convert to fraction form
    57,430.04/86,145.20 = 17,990.60/x
  3. Step 3: Cross multiply
    57,430.04x = 86,145.20 × 17,990.60
  4. Step 4: Simplify right side
    57,430.04x = 1,549,803,835.12
  5. Step 5: Solve for x
    x = 1,549,803,835.12/57,430.04
  6. Step 6: Final answer
    x = 26,985.94

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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.