Home / 15,430.60-23,145.90-5,570.20

Finding the Fourth Proportional to 15,430.60, 23,145.90 and 5,570.20

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Solution

The fourth proportional to 15,430.60, 23,145.90 and 5,570.20 is: 8,355.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,430.60 : 23,145.90 = 5,570.20 : x
  2. Step 2: Convert to fraction form
    15,430.60/23,145.90 = 5,570.20/x
  3. Step 3: Cross multiply
    15,430.60x = 23,145.90 × 5,570.20
  4. Step 4: Simplify right side
    15,430.60x = 128,927,292.18
  5. Step 5: Solve for x
    x = 128,927,292.18/15,430.60
  6. Step 6: Final answer
    x = 8,355.30

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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.