Home / 15,656.40-23,501.88-12,390.48

Finding the Fourth Proportional to 15,656.40, 23,501.88 and 12,390.48

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Solution

The fourth proportional to 15,656.40, 23,501.88 and 12,390.48 is: 18,599.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,656.40 : 23,501.88 = 12,390.48 : x
  2. Step 2: Convert to fraction form
    15,656.40/23,501.88 = 12,390.48/x
  3. Step 3: Cross multiply
    15,656.40x = 23,501.88 × 12,390.48
  4. Step 4: Simplify right side
    15,656.40x = 291,199,574.10
  5. Step 5: Solve for x
    x = 291,199,574.10/15,656.40
  6. Step 6: Final answer
    x = 18,599.40

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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.